generator vs author

generator and author both are nouns.

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

As nouns, generator and author are synonyms defined as:

generator and author: someone who originates or causes or initiates something

Other synonyms of generator include source.

generator (noun)	author (noun)
engine that converts mechanical energy into electrical energy by electromagnetic induction	writes (books or stories or articles or the like) professionally (for pay)
an apparatus that produces a vapor or gas	someone who originates or causes or initiates something
an electronic device for producing a signal voltage
someone who originates or causes or initiates something

generator (verb)	author (verb)
	be the author of