What is the definition of a possessive singular noun?

A noun is a Word for a person, a place, or a thing.

A singular noun is a Word for one person, place, or thing.

The possessive form of a singular noun is a Word that shows ownership or possession, or origin or purpose.

Singular nouns indicate possession by the addition of an apostrophe s ('s) at the end of the Word.

Examples:

Possessive nouns indicating ownership or possession.

the car of my mother = my mother's car

the beach of Ocean City = Ocean City's beach

the cover of the book = the book's cover

Possessive nouns indicating origin or purpose.

Shakespeare's plays = plays originated by William Shakespeare.

the park's picnic area = an area for the purpose of picnicking in the park.

today's newspaper = the newspaper originated today.