Cooper vs author

Cooper and author both are nouns.

Word	Noun	Adjective	Verb	Adverb
Cooper	Yes	No	No	No
author	Yes	No	Yes	No

Cooper (noun)	author (noun)
United States novelist noted for his stories of American Indians and the frontier life (1789-1851)	writes (books or stories or articles or the like) professionally (for pay)
United States film actor noted for his portrayals of strong silent heroes (1901-1961)	someone who originates or causes or initiates something
United States industrialist who built the first American locomotive; founded Cooper Union in New York City to offer free courses in the arts and sciences (1791-1883)

Cooper (verb)	author (verb)
	be the author of