Emerson vs author

Emerson and author both are nouns.

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

Emerson (noun)	author (noun)
United States writer and leading exponent of transcendentalism (1803-1882)	writes (books or stories or articles or the like) professionally (for pay)
	someone who originates or causes or initiates something

Emerson (verb)	author (verb)
	be the author of