Possessive nouns are nouns that show possession or ownership of something.
Any noun can become a possessive noun. Here are some examples:
How Possessive Nouns Function
Possessive nouns are nouns that function as adjectives. They always modify another noun.
Ben's baby is cute.
The possessive noun tells us which baby is cute. It modifies the noun by telling us which one is being talked about.
How to Form Possessive Nouns
Singular possessive nouns are normally formed by adding 's to the end of a singular noun.
singular noun + 's
girl + 's = girl's
The girl's gun is too big for her.
Exception: Singular nouns ending in 's'
noun + '
class + ' = class'
plural noun + '
girls + ' = girls'
The girls' team is winning.
Exception: Irregular plural nouns
noun + 's
men + 's = men's