penning vs author

penning and author both are nouns.

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

penning (noun)	author (noun)
the act of creating written works	writes (books or stories or articles or the like) professionally (for pay)
	someone who originates or causes or initiates something

penning (verb)	author (verb)
	be the author of