author vs authorship

author and authorship both are nouns.

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

author (noun)	authorship (noun)
writes (books or stories or articles or the like) professionally (for pay)	the act of creating written works
someone who originates or causes or initiates something	the act of initiating a new idea or theory or writing

author (verb)	authorship (verb)
be the author of