Common Nouns
A common noun is any non-specific person, place, or thing.
A comon noun does not begin with a capital letter, because it is not the name of a specific person, place, or thing.
Examples:
man
shirt
teacher
apple
Select the common noun
Proper Nouns
A proper noun is a specific person, place, or thing.
It is the name of a person, place, or thing.
All individual people, months, holidays, cities, and other names of specific nouns are proper nouns.