What is a noun? Rules and examples
Short answer: A noun is a word that names a person, an animal, a place or a thing. Nouns answer the questions Who? and What? In “The cat sleeps”, cat is the noun. Words for actions (run, see) and describing words (red, big) are not nouns. Names such as Mia and London are nouns too.
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At a glance
| Type | Examples | Question it answers |
|---|---|---|
| Person | teacher, boy, Mia | Who? |
| Animal | cat, bird, fish | What? |
| Place | school, park, London | Where? |
| Thing | ball, book, music | What? |
In short
- A noun names a person, an animal, a place or a thing.
- A noun answers who or what.
- Action words and describing words are not nouns.
What is the rule for “Naming words: nouns”?
The rule
A noun names a person, an animal, a place or a thing.
How it looks
a / the / my + noun: a dog, the teacher, my house
What it means
A noun answers the question Who? or What?
When to use it
Use a noun to say who or what you mean.
How it works
- Look for the word that names someone or something. In “My teacher is kind”, teacher names a person.
- Try the test: can you put a, an, the or my before the word? A dog, the teacher and my house all work, so they are nouns.
- Some nouns name things you cannot touch, such as music, time and happiness. They are still nouns.
- A noun can start a sentence (The dog runs) or come after a verb (I see the dog).
Examples of “Naming words: nouns”
- The cat sleeps.
cat names an animal. - My teacher is kind.
teacher names a person. - We go to school.
school names a place. - A ball is in the box.
ball and box name things. - My brother plays football.
brother names a person. football names a game. - The river is long.
river names a place in nature. long describes it and is not a noun. - Music makes me happy.
music names something you hear but cannot touch. It is a noun. - Lan and Ben eat rice.
Lan and Ben are names, so they are nouns. rice is a noun for food.
Common mistakes with “Naming words: nouns”
In "I see a dog", the noun is see.→ In "I see a dog", the noun is dog.
see shows an action. dog names an animal.In "a red ball", red is the noun.→ In "a red ball", ball is the noun.
red describes the ball. ball is the name of the thing.run is a noun.→ run is an action word. A noun names something.
You can do run. You cannot point to a run like a dog or a ball.mia is my friend.→ Mia is my friend.
A person’s name is a noun and starts with a capital letter.I have two cat.→ I have two cats.
A noun that means more than one usually ends in -s.
Exceptions: watch out
- Names: Mia, Ben
The name of a person is a noun too. It starts with a capital letter: Mia, Ben.
Noun or verb? How to tell
Some English words can be a noun in one sentence and a verb in another. The job of the word in the sentence tells you which one it is.
| Sentence | Word | What it is |
|---|---|---|
| I like the walk. | walk | noun (a thing: the walk) |
| I walk to school. | walk | verb (an action) |
| The water is cold. | water | noun |
| Please water the plants. | water | verb |
See also: Subject + Verb
Check yourself
- Which words are nouns? “The red ball is on the table.”
Show the answer
ball, table red describes the ball and is is a verb. ball and table name things.
- Is run a noun in “I run every day”?
Show the answer
No. Here run is an action, so it is a verb.
- Why does Mia start with a capital letter?
Show the answer
Because it is a name. The name of a person is a noun, and names start with a capital letter.
How to practice “Naming words: nouns”
The interactive version adds step-by-step help, spoken instructions and a quick check. One rule card, one sound lesson and the first lesson of every stone are free to try; the rest is part of Full Access. See Full Access.
- Practice lesson: Naming words (nouns)
Questions
Is a name like “Mia” a noun?
Yes. A name is a noun. It names one person, place or pet, and it starts with a capital letter: Mia, Ben, London.
Can a noun be two words?
Yes. Some nouns are made of two words, such as ice cream or swimming pool. Together they name one thing.
How do I find the noun in a sentence?
Ask Who? or What? about the sentence. In “The dog chases a ball”, who chases? The dog. What does it chase? A ball. Both words are nouns.
More Grammar Foundations rules
- A or An?: Before one thing, say a or an. Choose by the first sound.
- One and many: plural -s: For more than one thing, add -s: one cat, two cats.
- Plurals: -es, -ies and special nouns: Most nouns add -s. Some add -es or -ies, and some change a lot.
- this, that, these, those: Use this and these for things near you. Use that and those for things far away.
- I am, you are, it is: Use am with I, are with you and is with it.
- he, she, it, we, they + is / are: A pronoun takes the place of a name. Use is with he, she and it. Use are with we, you and they.
Used in these writing topics
Part of the 📘 Grammar tool. Level G1: Grammar Foundations. Đọc bằng tiếng Việt. See also: Parts of speech: noun, verb, adjective, adverb, pronoun.
Written for English learners by the English for Fun team. How we write our lessons · Last updated 2026-11-05.
Reviewed by Chinh Q. Hoang, PhD, founder, English for Fun · 2026-10-30