Singular noun and Plural nouns

A singular noun states some in one like Whale , dolphin , tiger , they are all singular nouns. Plural nouns , the word plural is a greek word which states plus or more , like plus in mathematics to add , for example lion if we add it becomes lions. We have nouns like singular and Plural but after that we have nouns like “ Irregular Nouns “ they are nouns which are plural but not in a pattern for example : Leaf-Leaves , Child-Children , Fungus-Fungi , Mouse–Mice and more.

Plural noun rule

Common noun

Proper noun

Source