authorship vs pen

authorship and pen both are nouns.

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

authorship (noun)	pen (noun)
the act of creating written works	female swan
the act of initiating a new idea or theory or writing	a writing implement with a point from which ink flows
	an enclosure for confining livestock
	a correctional institution for those convicted of major crimes
	a portable enclosure in which babies may be left to play

authorship (verb)	pen (verb)
	produce a literary work