What is a propor noun?

A proper noun is the name of a specific person, place, or thing; a proper noun is also any noun used as a name or a title. Examples:

common noun: woman

proper noun: Marie

common noun: city

proper noun: Chicago

common noun: building, apple

proper noun: Empire State Building, The Big Apple

common abstract noun: treasure

proper noun: Treasure Island

common abstract noun: love

proper noun: We Found Love (Rihanna)