Which word is a singular noun

Nouns are the naming words. It not only denotes the name of a person, place or thing but also the emotions, feelings, idea, state of age , state of mind, etc. Examples : pain, love, care, Netherland , Nouns can be singular or plural 

Singular are the ones which are single in nature while plural are the ones which are plural means more than one . 

What is Singular Noun 

Singular comes from the word single . Singular Nouns are the those which refers a single or one person, place or thing .

For example : boy, lady, man, calf, city, joy, happiness , etc.

Singular Noun definition 

These are nouns which are singular in nature , it can be countable or uncountable both , it refers to one and only one person, material, place , etc. 

Singular Noun Examples 

Chair ( singular ) – chairs ( plural i.e. more than one ) 

Beach ( singular ) – beaches ( plural ) 

Hat ( singular ) – hats ( plural ) 

Island ( singular ) – islands ( plural ) 

Singular Noun Examples in sentences 

Singular noun generally takes singular verb to fulfill the syntax 

1. The boy is carrying a big box which consists of sweets 

Here boy is singular and takes singular verb 

2.  Friday comes after Thursday 

Friday is a day which is singular in nature and takes singular verb 

3. Music is a kind of entertainment . 

Music is singular noun takes singular verb 

List of Singular Noun 

There are different types of Singular nouns like place  , person, idea, animals, things, objects, ideas, etc.

Singular Noun ( Person )	Singular Noun ( Animals )	Singular Noun ( Place )	Singular Noun ( Emotion )
Boy	Deer	Office	Love
Girl	Fish	College	Care
Child	Ostrich	Reception	Happiness
Citizen	Owl	Mussoorie	Sadness
Lad	Rhino	Shimla	Jealousy
Lady	Bird	Desert	Bravery
Man	Parrot	Room	Hate
Woman	Swan	Kitchen	Smile
Male	Duck	Park	Worry

Singular Countable Noun :

There are two ways to classify noun 

a ) Countable 

b ) Uncountable 

Countable nouns are the ones which can be counted , of which we can make plural . Singular Countable nouns are the nouns which are single in nature but can be counted 

For examples : device , house, hanky, bag, forest, plant, human being , etc. 

Singular Possessive Noun : 

Possessive nouns are the nouns that shoes the ownership or a direct connection and which is used as an apostrophe (‘s) letter at the end for example : 

Cat – cat’s 

John – John’s 

Wheel – wheel’s 

Train – train’s 

Empire – Empire ‘s 

Difference between Singular Noun and Plural Noun 

1. Singular Nouns are the ones which are singular in nature or single or only one unit .

2. They can be countable or uncountable both for Examples 

3. Passenger , mobile , hat, test, information , advice , career, profession , peace 

4. Plural nouns are the ones which are plural in nature means more than one or more than one unit .

5. They can be countable only , we cannot make plural of uncountable nouns .

For example : passengers , mobiles , hats, tests , careers, 

FAQ’s 

Que 1. What are the ten examples of Singular Nouns ? 

Answer- Let us understand Singular Noun with the given below examples-

1. This is the house which I always wanted to purchase. ( house is the singular noun ) 

2. She is the only lady who stands against odds. ( lady is the singular noun ) 

3. I have given you a piece of advice. ( Piece of advice is the singular noun ) 

4. They have transferred money to me. ( Money is the singular noun ) 

5. We had a loaf of bread to give to beggar. ( A loaf is a singular noun ) 

6. This is an instrument which can repair all the machines. ( Instrument is a singular noun ) 

7. Cabinet committee formulated a policy for handicapped. ( Policy is a singular noun ) 

8. They submitted a report. ( Report  is a singular noun ) 

9. We all follow the regulation made by the warden. ( Regulation is a singular noun ) 

10. All should start a new venture. ( Venture is a singular noun ) 

Que 2. What is Singular Countable Noun ? 

Answer- Singular Countable Noun is the one which is single or singular in nature and countable nouns are the one which can be counted like coin – coin, journey, task, job, shower, poem, dollar 

Que 3. What is rule of Singular Noun? 

Answer- Singular noun denotes a single person, place or object which generally doesn’t take s or es or ies with it for example resistance, hair, service, etc. 

Singular definition: The singular form is a type of noun that refers to just one person or thing.

What does singular mean? The singular form is the non-plural form of nouns and pronouns. Singular form refers to just one (a single) noun (versus plural, more than one, noun).

Examples of Singular Nouns

There are literally thousands of singular nouns, so we can’t exactly put an exhaustive list together, but here are a few examples of singular nouns in English.

List of Singular Nouns:

• a dog
• the cat
• a house
• the tree
• an apple
• a baby
• the city
• the song
• a computer
• a phone

Singular, Plural Forms of Nouns

What is the singular form? Most nouns have singular and plural forms. The singular form of the noun refers to just a single item. For instance, “an apple” refers to just one apple.

The plural form of the noun (apples) refers to more than one apple.

For most nouns, “-s” is added to the end of the sentence to create the plural form. When the word ends in “-y,” the “-y” is dropped and “-ies” is added to the end of the word to create the plural form (see below).

Examples of Singular/Plural Nouns

• dog/dogs
• cat/cats
• house/houses
• tree/trees
• apple/apples
• baby/babies
• city/cities

Count Nouns vs. Non-count Nouns

A count noun is a person, place, or thing that can have a singular or plural form. Most nouns have both singular and plural forms. Typically, by adding “s” to a noun, the plural form is made. A count noun can be counted.

• boy/boys
• home/homes
• orange/oranges

A non-count noun is a person, place, or thing that does not have a plural form. In a sense, a non-count noun cannot be counted, and since it cannot be counted exactly, there is no plural form of count nouns.

• equipment
• storage
• courage

Consider the last example, courage. The word courage cannot be made plural into “courages.”

Singular Agreement in Number

It is critical that a singular noun has the appropriate agreement with all of its corresponding parts of speech.

Verb Agreement

Singular nouns require singular verbs. Using plural verbs with singular nouns (or vice versa) is unacceptable.

Examples with “to write:”

• I write. (singular)
• You write. (singular and plural)
• He/She/it writes. (singular)
• We write. (plural)
• They write. (plural)

It is grammatically incorrect to state: I writes.

Demonstrative Adjectives

Singular nouns require singular demonstrative adjectives. Using plural demonstrative adjectives with singular nouns (or vice versa) is unacceptable.

Examples:

• this cat (singular)
• that cat (singular)
• those cats (plural)
• these cats (plural)

It is grammatically incorrect to state: Those cat.

Possessive Adjectives

Possessive adjectives work with both singular and plural nouns.

Examples Singular/Plural:

• my house/my house
• your house/your houses (singular)
• his/her/its house AND his/her/its houses
• our house/our houses
• your house/your houses (plural)
• their house/their

Exercises with Singular, Plural Forms

Fill in the blank with the appropriate verb or demonstrative adjective.

1. I want to buy this/those shoes.
2. Where is/are your new shoes?
3. Take that/these garbage out.
4. He walk/walks to school every day.
5. We take/takes the train on Mondays.

See answers below.

Summary: What is a Singular Noun?

Define singular noun: the definition of singular noun is the form of a word that refers to just one person or thing.

In summary,

• Singular nouns refer to just one noun.
• Plural nouns refer to more than one of a given noun.
• Singular nouns require singular agreement with their verbs and adjectives.

Answers

1. those
2. are
3. that
4. walks
5. take

Contents

• 1 What is the Singular Form?
• 2 Examples of Singular Nouns
• 3 Singular, Plural Forms of Nouns
• 4 Examples of Singular/Plural Nouns
• 5 Count Nouns vs. Non-count Nouns
• 6 Singular Agreement in Number
• 7 Verb Agreement
• 8 Demonstrative Adjectives
• 9 Possessive Adjectives
• 10 Exercises with Singular, Plural Forms
• 11 Summary: What is a Singular Noun?

Nouns refer to the many people, places, and things around us. There are many different types of nouns that we use when talking about everything we see or experience. Sometimes, we are talking about one thing. For example, you may have only one pet, one sister, one house, one last slice of pizza, or one idea for a funny knock-knock joke. One is the loneliest number, so let’s try to cheer it up by introducing the term for the type of noun we use to refer to single objects: the singular noun.

What is a singular noun?

The word singular, when used in grammar, means “noting or pertaining to a member of the category of number found in many languages that indicates that a word form has one referent or denotes one person, place, thing, or instance.” A singular noun is a noun that refers to one, and only one, object or person. For example, the word girl is a singular noun but the word girls is not a singular noun because it refers to more than one person. Girls is a plural noun.

While singular nouns are usually simple to understand, sometimes things can get tricky. A collective noun, for example, is a singular noun that refers to a group of people or things as a single unit. Words like team, family, and pile are collective nouns. Even though these words refer to multiple people or things, they are still singular nouns because they refer to a single, distinct unit.

Also, some English words like to be difficult and sometimes function as singular nouns. Words like data, fish, and measles may or may not be singular nouns, so be careful! Don’t be surprised if you see some people use these words with a plural verb as in The data are showing a growth in sales or My fish swim really fast. Names and titles also like to be sneaky, so you will need to carefully use nouns like Bahamas and Star Wars. (Countries can be singular or plural depending on the sentence.)

Who knew nouns could be so complicated? It might help to visit this review of what a noun can be in more detail.

Singular noun examples

Of all of the different types of nouns we use, singular nouns are relatively easy to use. There aren’t any special capitalization or punctuation rules you need to remember when using them. The one thing you must remember is that singular nouns use singular verbs such as is, was, or does. Simply remember that a singular noun is a noun that refers to one person, place, or thing. Let’s take a look at examples of singular nouns.

People and animals 

Singular nouns are used to refer to one person or one animal. Both generic and specific people and animals can be referred to with singular nouns.

• People: man, woman, firefighter, waiter, hero, Batman, Queen Elsa
• Animals: dog, cat, bird, bug, lion, tiger, bear, Mickey Mouse, Koko the Gorilla

Places

Just as before, we use singular nouns to refer to one place.

• beach, city, neighborhood, town, island, country, Mexico, France, China, Australia

Things 

You can use singular nouns to refer to a lot of stuff you experience with your five senses.

• chair, computer, apple, cinnamon, trash, hat, wind, rain, Google, Twitter, Amazon

Ideas

We also use singular nouns to refer to ideas, emotions, philosophies, concepts, and other intangible things you can’t detect with your five senses.

• hunger, sadness, time, disease, government, religion, peace, science, Friday, October

List of singular nouns

Many of the other types of nouns can also be singular nouns. Let’s look at some examples of different types of nouns used as singular nouns.

Common nouns: kangaroo, clock, banana, backyard, baseball, toy
Proper nouns: Abraham Lincoln, Texas, Nintendo, Buddhism
Concrete nouns: desk, house, dirt, cake, monkey, lake, moon
Abstract nouns: war, happiness, confusion, poverty, unemployment
Countable nouns: cookie, cup, hat, hamster, cloud
Uncountable nouns: doubt, sand, music, entertainment, furniture

The difference between singular and plural nouns

To recap, a singular noun refers to one person, place, or thing. The type of noun that refers to more than one person, place, or thing is known as a plural noun. Singular nouns always use singular verbs (such as is, was, and walks) while plural nouns use plural verbs (such as are, were, and walk). Only singular nouns can use the articles a and an.

Plural nouns can be tricky to tell apart from singular nouns. Many plural nouns are created by simply adding the letter S to a singular noun as in the words cats, hamburgers, or ideas. However, many plural nouns do not follow this rule, so you need to keep an eye out. Always remember the rule that a singular noun is a noun that only refers to one person, place, or thing. Here are examples of the different ways that we use singular and plural nouns:

• A lady (singular noun) bought a dress (singular noun) from the store (singular noun).
• My brother (singular noun) collects stamps (plural noun).
• Math (singular noun) gives me headaches (plural noun).
• The shark (singular noun) had sharp teeth (plural noun).
• Chris didn’t meet the required criteria (plural noun!) for being a dancer (singular noun).
• I caught a really big fish (singular noun).
• Octopuses (plural noun) sometimes eat many fish (plural noun).

All the nouns, none of the errors

Did you know that singular also means “extraordinary, remarkable”? And you too can be a singular writer with the help of Thesaurus.com’s Grammar Coach™. This writing tool uses machine learning technology uniquely designed to catch grammar and spelling errors. Its Synonym Swap will find the best nouns, adjectives, and more to help say what you really mean, guiding you toward clearer, stronger, writing.

Whether you’re writing about a person, place, or thing, perfect grammar has never been easier!

Singular nouns and plural nouns are explained along with the definition, a lot of examples, plural noun rules, lists, etc.

Let’s explore Singular Nouns and Plural nouns! We have already learned singular implies single and it means only one. It may be one person, one animal, one place, one thing, or one idea, or anything which is only one number.

Plural means it is more than one. It may be two or more. Like two persons, two cows or two cities, etc. When the noun consists of a single number it is a singular noun and for more than one it is a plural noun. In many cases, we add ‘s’ or ‘es’ with singular nouns to make plural nouns.

• Like the plural noun of ‘cow’  is ‘cows’
• The plural noun of ‘cat’ is ‘cats’

But in many cases, there are no rules followed when we make plural nouns. For examples,

• The man changed into men
• Sheep don’t change, it means the plural of sheep will be sheep only.

These are known as irregular plurals or irregular plural nouns.

Singular Noun Definition and Examples of Singular Noun

Singular Noun Definition

When a noun consists of only one number, this noun is known as a singular noun.

Singular Noun Examples

• One no of tiger
• One no of computer
• One no of pen
• One no of horse
• One no of mobile

Sentence Examples

• The tiger was very hungry and run behind a bull
• I have one computer
• Rimi has a pen in her bag
• We have one dog, one horse, and one cat
• I have got an idea
• She is typing on a mobile

Singular Countable Nouns

We know, if any noun can be counted it is a countable noun. Noun, when we talk about one person or animal or place or thing or idea, we will call it a singular countable noun. There are lots of singular countable noun in our daily life, few are cited,

• Rumi
• bird
• computer
• mobile
• apple
• bus
• pen
• book

Check out our ANIMATED VIDEO!

Plural Nouns  & Examples

Plural Nouns

Reba went to the zoo yesterday and she has seen five giraffes, two crocodiles, 3 tigers, 6 foxes, and many birds. If you observe, she has seen more than two giraffes, tigers, foxes, and birds. Hence, these numbers are more than two and are known as a plural noun.

• Two or more than two tiger = tigers
• Two or more than two giraffe = giraffes
• Two or more than two fox = foxes
• Two or more than two bird = birds

Here, tigers are plural nouns of tiger, giraffes are plural nouns of giraffe, birds are plural nouns of bird, and so on. Hence, tigers, giraffes, foxes, and birds, etc. are plural nouns.

Now, look at all examples, what we did here? We simply, add ‘s’ or ‘es’ at the end of the word and changed the singular noun into a plural noun. These plurals are normal plural nouns or regular plural nouns. When plural nouns are not based on specific rules, irregular plural nouns are formed.

Refer to our interesting articles, 100 Irregular Plural Noun List

Examples of plural noun

Thee are thousands of plural nouns used in our daily life, few of them are listed for examples,

• Two or more no of tiger   = tigers
• Two or more no of computer   = computers
• Two or more no of pen = pens
• Two or more no of horse = houses
• Two or more no of mobile = mobiles

Sentence examples

The following sentences contain plural noun examples.

• The boys are enjoying the game.
• We have many chocolates for girls.
• Tina has two bags
• We have seen two tigers fighting in the zoo.
• Ideas can change our life

Singular and Plural Noun Rules

Rule#1: When we make a plural form of a regular noun, simply add ‘s’ or ‘es’ at the end.

There are a lot of regular nouns in English Grammar we use in our daily life and we will simply add it to make plural nouns.

Add ‘s’

Singular	Plural	Remarks
anaconda	anacondas	s’ is added at the end of anaconda
apple	apples	s’ is added at the end of apple
bat	bats	s’ is added at the end of bat
ball	balls	s’ is added at the end of ball
bell	bells	s’ is added at the end of bell
boat	boats	s’ is added at the end of boat
car	cars	s’ is added at the end of car
camel	camels	s’ is added at the end of camel
cat	cats	s’ is added at the end of cat
computer	computers	s’ is added at the end of computer
container	containers	s’ is added at the end of container
cup	cups	s’ is added at the end of cup
dog	dogs	s’ is added at the end of dog
egg	eggs	s’ is added at the end of egg
elephant	elephants	s’ is added at the end of elephant
horse	horses	s’ is added at the end of horse
house	houses	s’ is added at the end of house
idea	ideas	s’ is added at the end of idea
insect	insects	s’ is added at the end of insect
lamp	lamps	s’ is added at the end of lamp
mug	mugs	s’ is added at the end of mug
plate	plates	s’ is added at the end of plate
river	rivers	s’ is added at the end of river
train	trains	s’ is added at the end of train
tram	trams	s’ is added at the end of tram
tree	trees	s’ is added at the end of tree
window	windows	s’ is added at the end of window

Rule#2 If any singular noun ends with ‘s’, ‘ss’, ‘ch’, ‘sh’, add ‘es’ to the end to make it plural.

There are a lot of regular nouns end with ‘s’, ‘ss’, ‘sh’, etc. in English Grammar we use in our daily life and we will simply add it to make plural nouns.

Singular	Plural	Remarks
bus	buses	bus ends with ‘s’, hence, ‘es’ is added at the end
church	churches	church ends with ‘ch’, hence, ‘es’ is added at the end
address	addresses	address ends with ‘ss’, hence, ‘es’ is added at the end
class	classes	class ends with ‘ss’, hence, ‘es’ is added at the end
brush	brushes	brush ends with ‘sh’, hence, ‘es’ is added at the end
arch	arches	address ends with ‘ss’, hence, ‘es’ is added at the end
branch	branches	address ends with ‘ss’, hence, ‘es’ is added at the end
flash	flashes	flash ends with ‘sh’, hence, ‘es’ is added at the end
dish	dishes	dish ends with ‘sh’, hence, ‘es’ is added at the end
dress	dresses	dress ends with ‘ss’, hence, ‘es’ is added at the end

Rule#3 If any singular noun ends with ‘ch’, and sounds like k, add ‘s’ instead of ‘es’ to the end to make it plural.

Singular	Plural	Remarks
stomach	stomachs	ch’ in stomach sounds ‘k’, hence, only ‘s’ will be added at the end instead of ‘es’
monarch	monarchs

Rule#4 If any singular noun ends with ‘x’, or ‘z’, add ‘es’ to the end to make it plural.

Singular	Plural	Remarks
blitz	blitzes	blitz ends with ‘z’, hence, ‘es’ will be added at the end
box	boxes	box ends with ‘x’, hence, ‘es’ will be added at the end
buzz	buzzes
fox	foxes
tax	taxes

Rule#5 Few singular nouns ending with ‘s’ or ‘z’, require doubling this s or z before adding ‘es’ to make irregular plurals.

Singular	Plural	Remarks
fez	fezzes	fez ends with ‘z’, here, z doubles, and ‘es’ is added.
gas	gasses

Rule#6: When the singular noun is ending with a consonant ‘y’ and prior to ‘y’ there is no vowel, then to make the plural, ‘y’ changed into ‘i’ and add es.

Singular	Plural	Remarks
puppy	puppies	puppy ends with ‘y’, hence, ‘y’ changed into ‘I’ and ‘es’ is added in puppies
baby	babies	baby ends with ‘y’, hence, ‘y’ changed into ‘i’ and ‘es’ is added in babies
sky	skies	sky ends with ‘y’, hence, ‘y’ changed into ‘i’ and ‘es’ is added in skies
library	libraries	library ends with ‘y’, hence, ‘y’ changed into ‘i’ and ‘es’ is added in libraies
spy	spies	spy ends with ‘y’, hence, ‘y’ changed into ‘i’ and ‘es’ is added in spies
enemy	enemies	enemy ends with ‘y’, hence, ‘y’ changed into ‘i’ and ‘es’ is added in enemies
berry	berries	berry ends with ‘y’, hence, ‘y’ changed into ‘i’ and ‘es’ is added in berries
university	universities	university ends with ‘y’, hence, ‘y’ changed into ‘i’ and ‘es’ is added in universities
lobby	lobbies	lobby ends with ‘y’, hence, ‘y’ changed into ‘i’ and ‘es’ is added in lobbies
fly	flies	baby ends with ‘y’, hence, ‘y’ changed into ‘i’ and ‘es’ is added in babies
candy	candies	ies’ is modified in candies
lady	ladies	ies’ is modified in ladies
city	cities	ies’ is modified in cities
country	countries	ies’ is modified in countries
nappy	nappies	ies’ is modified in nappies
dairy	dairies	ies’ is modified in dairies
daisy	daisies	ies’ is modified in daisies
dictionary	dictionaries	ies’ is modified in dictionaries

Rule#7: When a singular noun is ending with a consonant ‘y’ and prior to y, there is a vowel, then after ‘y’ need to add ‘s’ only.

Singular	Plural	Remarks
alloy	alloys	alloy ends with ‘y’ and prior to ‘y’, there is a vowel ‘o’. Hence, ‘s’ is added in alloys
boy	boys	boy ends with ‘y’ and prior to ‘y’, there is a vowel ‘o’. Hence, ‘s’ is added in boys
day	days	day ends with ‘y’ and prior to ‘y’, there is a vowel ‘a’. Hence, ‘s’ is added in days
delay	delays	delay ends with ‘y’ and prior to ‘y’, there is a vowel ‘a’. Hence, ‘s’ is added in delays
donkey	donkeys	donkey ends with ‘y’ and prior to ‘y’, there is a vowel ‘e’. Hence, ‘s’ is added in donkeys
essay	essays	essay ends with ‘y’ and prior to ‘y’, there is a vowel ‘a’. Hence, ‘s’ is added in essays
Key	keys	key ends with ‘y’ and prior to ‘y’, there is a vowel ‘e’. Hence, ‘s’ is added in keys
monkey	monkeys	monkey ends with ‘y’ and prior to ‘y’, vowel ‘e’. Hence, ‘s’ is added in monkeys
prey	preys	prey ends with ‘y’ and prior to ‘y’, vowel ‘e’. Hence, ‘s’ is added in preys
toy	toys	toy ends with ‘y’ and prior to ‘y’, vowel ‘o’. Hence, ‘s’ is added in toys
tray	trays	tray ends with ‘y’ and prior to ‘y’, vowel ‘a’. Hence, ‘s’ is added in trays
turkey	turkeys	turkey ends with ‘y’ and prior to ‘y’, vowel ‘e’. Hence, ‘s’ is added in turkeys

Rule#8: When a singular noun is ending with a consonant ‘y’ and it represents persons or places, simply add ‘s’.

Singular	Plural	Remarks
Germany	Germanys	Germany ends with ‘y’ and it refers to a specific name of the place, hence, ‘s’ is added in Germanys. We can say, Germanys are very intelligent. (For example only)
Chakraborty	Chakrabortys	Chakraborty ends with ‘y’ and it refers to the category os people, hence, ‘s’ is added in Chakrabortys. We say, So, many Chakrabortys are famous in the world. (For example only)

Rule#9: When a noun ends with ‘f’ or ‘fe’, then ‘f’ is changed into ‘ve’ and add ‘s’.

Singular	Plural	Remarks
calf	calves	calf ends with ‘f’. Hence, ‘f’ changed into ‘ve’ and add ‘s’ in calves
dwarf	dwarves	dwarf ends with ‘f’. Hence, ‘f’ changed into ‘ve’ and add ‘s’ in dwarves
half	halves	half ends with ‘f’. Hence, ‘f’ changed into ‘ve’ and add ‘s’ in halves
leaf	leaves	leaf ends with ‘f’. Hence, ‘f’ changed into ‘ve’ and add ‘s’ in leaves
life	lives	life ends with ‘fe’. Hence, ‘fe’ changed into ‘ve’ and add ‘s’ in lives
loaf	loaves	loaf ends with ‘f’. Hence, ‘f’ changed into ‘ve’ and add ‘s’ in loaves
knife	knives	knife ends with ‘fe’. Hence, ‘fe’ changed into ‘ve’ and add ‘s’ in knives
scarf	scarves	scarf ends with ‘f’. Hence, ‘f’ changed into ‘ve’ and add ‘s’ in scarves
self	selves	self ends with ‘f’. Hence, ‘f’ changed into ‘ve’ and add ‘s’ in selves
shelf	shelves	shelf ends with ‘f’. Hence, ‘f’ changed into ‘ve’ and add ‘s’ in shelves

There are some exceptions to this rule,

Singular	Plural	Remarks
chef	chefs	s’ is added in chefs
chief	chiefs	s’ is added in chiefs
Cliff	Cliffs	s’ is added in cliffs
cuff	cuffs	s’ is added in cuffs
dwarf	dwarfs	s’ is added in dwarfs
grief	griefs	s’ is added in griefs
handkerchief	handkerchiefs	s’ is added in handkerchiefs
kerchief	kerchiefs	s’ is added in kerchiefs
proof	proofs	s’ is added in proofs
roof	roofs	s’ is added in roofs
safe	safes	s’ is added in safes

Rule#10 When a singular noun ends with ‘o’, followed by a consonant, simply add ‘es’.

Singular	Plural	Remarks
hero	heroes	hero ends with ‘o’, followed by consonant ‘r’, hence, ‘es’ is added in heroes.
potato	potatoes	same
tomato	tomatoes	same

There few exceptions here,

Singular	Plural	Remarks
halo	halos	Only ‘s’ is added as an exception
memento	mementos	same
photo	photos	same
piano	pianos	same
solo	solos	same

Rule#11 When a singular noun ends with ‘o’, followed by a vowel, add ‘s’ to make plural.

Singular	Plural	Remarks
cameo	cameos	cameo ends with ‘o’, followed by vowel ‘e’, hence, ‘s’ is added in cameos
studio	studios	same
portfolio	portfolios	same

Rule#12 However, when the words have a foreign origin (e.g., Latin, Greek, Spanish, Mexico, etc.), we  just add ‘s’ to make the plural. 

Singular	Plural	Remarks
taco	tacos	Taco is originated from Mexico, hence, only ‘s’ is added in tacos
avocado	avocados	same
maestro	maestros	same

Rule#13 When a singular noun ends with ‘us’, replace this ‘us’ by ‘i’.

Singular	Plural	Remarks
alumnus	alumni	alumnus ends with ‘us’, hence, ‘us’ changed into ‘I’ in alumni.
cactus	cacti	same
focus	foci	same
fungus	fungi	same
nucleus	nuclei	same
octopus	octopi	same
syllabus	syllabi	same

Rule#14 When a singular noun ends with ‘um’, replace this ‘um’ by ‘a’.

Singular	Plural	Remarks
bacterium	bacteria	bacterium ends with ‘um’, hence, ‘um’ changed into ‘a’ in bacteria.
curriculum	curricula	same
datum	data	same
medium	media	same

Rule#15 Few singular nouns end with ‘a’, replace this ‘a’ by ‘ae’.

Singular	Plural	Remarks
alga	algae	alga ends with ‘a’, hence, ‘a’ changed into ‘ae’ in algae.
alumna	antennae	same
amoeba	amoebae	same
antenna	antennae	same

There are so many worksheets available for singular nouns and plural nouns.

Rule#16 When a singular noun ends with ‘is’, simply replace it with ‘es’.

Singular	Plural	Remarks
analysis	analyses	analysis ends with ‘is’, hence, ‘is’ changed into ‘es’ in analyses
axis	axes	same
diagnosis	diagnoses	same
ellipsis	ellipses	same
hypothesis	hypotheses	same
parenthesis	parentheses	same

Rule#17 When a singular noun ends with ‘on’, replace it with ‘a’.

Singular	Plural	Remarks
criterion	criteria	criterion ends with ‘on’, hence, ‘on’ changed into ‘a’ in criteria
phenomenon	phenomena	same

Rule#18 When a singular noun ends with ‘ex’ or ‘ix’, replace it with ‘ices’.

Singular	Plural	Remarks
appendix	appendices	appendix ends with ‘ix’, hence, ‘ix’ changed into ‘ices’ in appendices
index	Indices	index ends with ‘ex’, hence, ‘ex’ changed into ‘ices’ in indices
matrix	matrices	same
vertex	vertices	same

Rule#19 Few singular nouns end with ‘o’, replace it by ‘i’.

Singular	Plural	Remarks
concerto	concerti	concerto ends with ‘o’, hence, ‘o’ changed into ‘i’ in concerti
graffito	graffiti	same
virtuoso	virtuosi	same

Conclusion

Hence, we have got a basic idea about singular nouns and plural nouns. Please note that you are always welcome to upgrade or modify our posts and always welcome to our study.