Vonnegut vs author

Vonnegut and author both are nouns.

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

Vonnegut (noun)	author (noun)
United States writer whose novels and short stories are a mixture of realism and satire and science fiction (born in 1922)	writes (books or stories or articles or the like) professionally (for pay)
	someone who originates or causes or initiates something

Vonnegut (verb)	author (verb)
	be the author of