adopt vs authorship

adopt is not a noun while authorship is a noun.

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

adopt (noun)	authorship (noun)
	the act of creating written works
	the act of initiating a new idea or theory or writing

adopt (verb)	authorship (verb)
take into one's family
take on a certain form, attribute, or aspect
take up the cause, ideology, practice, method, of someone and use it as one's own
put into dramatic form
take up and practice as one's own
choose and follow; as of theories, ideas, policies, strategies or plans
take on titles, offices, duties, responsibilities