what is a possesive noun?

A singular noun is a Word for one person, place, or thing. A possessive noun is a Word that shows that something belongs to that noun; possession is shown by adding -'s to the end of the noun or, some nouns that already end in an -s, just an apostrophe is added after the -s. Examples of singular possessive nouns:

• an angel's wings
• the boss's desk
• a cat's whiskers
• his daughter's school
• the egg's shell
• grandpa's chair