Jacobs vs author

Jacobs and author both are nouns.

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

Jacobs (noun)	author (noun)
Dutch physician who opened the first birth control clinic in the world in Amsterdam (1854-1929)	writes (books or stories or articles or the like) professionally (for pay)
United States writer and critic of urban planning (born in 1916)	someone who originates or causes or initiates something
English writer of macabre short stories (1863-1943)

Jacobs (verb)	author (verb)
	be the author of