authorship vs creation

authorship and creation both are nouns.

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

As nouns, creation is a hypernym of authorship; that is, creation is a word with a broader meaning than authorship:

authorship: the act of initiating a new idea or theory or writing
creation: the act of starting something for the first time; introducing something new

authorship (noun)	creation (noun)
the act of creating written works	the human act of creating
the act of initiating a new idea or theory or writing	the act of starting something for the first time; introducing something new
	an artifact that has been brought into existence by someone
	the event that occurred at the beginning of something
	everything that exists anywhere