govern vs governance

govern is not a noun while governance is a noun.

Word	Noun	Adjective	Verb	Adverb
govern	No	No	Yes	No
governance	Yes	No	No	No

govern (noun)	governance (noun)
	the act of governing; exercising authority
	the persons (or committees or departments etc.) who make up a body for the purpose of administering something

govern (verb)	governance (verb)
exercise authority over; as of nations
direct or strongly influence the behavior of
bring into conformity with rules or principles or usage; impose regulations
require to be in a certain grammatical case, voice, or mood