Singular Nouns
Lucy’s car is orange.
I ate dinner at Will’s house.
For nouns ending in s we can use's (widely accepted) or ' (less common).
The actress’s role was difficult. (Traditional)
Jess’ dog is called Mable.
Plural Nouns
For regular plural nouns (word ends with s) we add '.
My grandparents’ house is cozy.
My friends’ party was amazing. (2 friend)
My friend’s party was amazing. (1 friend)
For irregular plural nouns we add 's.
The children’s clothing is to your left. The women’s party is starting.
Nouns with multiple owners:
Lucy and Aly’s cat. (Last owner takes the possessive form)
Similar nouns owned separately: Lucy’s and Aly’s cats.