It's not easy to describe a noun. In simple terms, nouns are "things" (and verbs are "actions"). Like food. Food (n) is something you eat (v). Or happiness. Happiness (n) is something you want (v). Or human being. A human being (n) is something you are (v).
These pages explain more about the grammar of nouns and offer example sentences, quizzes and songs.
Types of Nouns
Common nouns and proper nouns, concrete nouns and abstract nouns, countable and uncountable, collective nouns, compound nouns
Countable Nouns and Uncountable Nouns
Why do some nouns have no plural?
dog/dogs, rice, hair(s)
The vast majority of nouns are common nouns. Words like car, dog, teacher, house, water, music, plane, sea—they are all "general" nouns and NOT the name of some person or place. We call them common nouns.
Your name is a "proper noun". Do we say "Atlantic Ocean" or "the Atlantic Ocean"? Should I write "february" or "February"?
Shirley, Mr Jeckyll, Thailand, April, Sony
A collective noun is a noun that represents a collection of individuals, usually people, such as a team, a family or a crew. With Collective Nouns Mini Quiz
This is a small group of nouns that are always plural, such as trousers, boxers, headphones, belongings. With Plural-Only Nouns Mini Quiz
Adding 's or ' to show possession or ownership
John's car, my parents' house
Noun as Adjective
Sometimes we use a noun to describe another noun. In that case, the first noun is "acting as" an adjective.
love story, tooth-brush, bathroom
A compound noun is a noun that is made with two or more words.
tennis shoe, six-pack, bedroom