what are possesive nouns?

Answer 1

Possessive nouns are those that show ownership. We add an apostrophe to a noun to make it possessive.

Examples:

child's toys
children's toys
dog's collar
dogs' collars

Answer 2

Possessive nouns are those which show ownership of the immediately following noun. (The term "ownership" needs to be understood very broadly.)

This is the boy's jacket. (boy's = possessive; boy owns jacket)

The radio's AM stations don't work. (radio's = possessive; radio "owns" stations)

My sisters' children all came over for Thanksgiving. (sisters' = plural possessive; sisters "own" children)

http://grammar.ccc.commnet.edu/grammar/possessives.htm

Answer 3

jackets, jacket's which is correct possessive noun