Steinbeck vs author

Steinbeck and author both are nouns.

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

Steinbeck (noun)	author (noun)
United States writer noted for his novels about agricultural workers (1902-1968)	writes (books or stories or articles or the like) professionally (for pay)
	someone who originates or causes or initiates something

Steinbeck (verb)	author (verb)
	be the author of