Uses Of Noun:
Nouns are words you use to talk about people, places, and things.

Singular
This is a book.
This is a singular noun. That means that it stands for one of something.

Plural
And these are books.
This is a plural noun. That means that it stands for more than one of something.

English usually forms the plural by adding an "s" to the singular noun. Sometimes, though, the plural looks like a completely different word:

There aren’t that many words in English that form the plural this way. It’s much more common to form the plural by adding "s."

Here are some more examples of English nouns: