author vs Shelley

author and Shelley both are nouns.

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

author (noun)	Shelley (noun)
writes (books or stories or articles or the like) professionally (for pay)	Englishman and romantic poet (1792-1822)
someone who originates or causes or initiates something	English writer who created Frankenstein's monster and married Percy Bysshe Shelley (1797-1851)

author (verb)	Shelley (verb)
be the author of