Forming Possessive of Given Noun

A possessive noun shows who or what owns something or has something. When a noun is singular, add an apostrophe and -s ('s) to form the singular possessive noun.

Matt → Matt's glove

When a noun is plural and ends in -s, just add an apostrophe (') to form the plural possessive noun.

the boys → the boys' camp

When a noun is plural and does not end in -s, add an apostrophe and -s ('s) to form the plural possessive noun.

the children → the children's toy