A noun put simply , is a thing person or place.
For an example:
The cat ate the rat.
The cat sat on the mat
The cat killed my maths teacher
I really like cats.
There are many types of nouns , such as possessive, countable , non-countable , collective ,etc.
Countable nouns are those that can be plural and more than one
For example : "My cats are hungry"
Non-countable nouns are those that cannot be counted seperately
For example : We do not pronounce rice as 'rices' but instead , sacks of rice or a sack of rice.
Proper nouns are basically names which can be used by a capital letter for the word
For example : Steve , September , Christian
Common nouns are the opposite of proper nouns , and are refer to general things or places
For example : Friends , road , doors.
Possessive nouns are those with an 's or ' added to show possession
For example : Stefanie's cake , Mary's pencil
Compound nouns are two nouns that are combined to form one word
For example :classroom, bookmarks.
For a more visual way of learning:
What are nouns? www.youtube.com/watch?v=AtIzLOK9Cwg
Countable and uncountable nouns www.youtube.com/watch?v=T-CTP0JpnWc
More on nouns: www.englishclub.com/grammar/nouns.htm