What is the definition of a pucuation possessive noun?

Answer 1

The punctuation to show possession is an apostrophe.

• Singular possessives are formed by adding an apostrophe s to the end of a noun.
• For plural nouns that end in -s, the possessive are formed by adding an apostrophe after the existing -s; for irregular plural nouns that don't end with -s, the possessive is formed by adding the apostrophe s, the same as a singular noun.

Answer 2

A punctuation possessive noun is a noun that indicates possession or ownership, and is followed by an apostrophe and an "s" ( 's ) in English grammar. For example, "the dog's bone" shows that the bone belongs to the dog.