governor vs govern

governor is a noun but govern is not a noun.

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

governor (noun)	govern (noun)
a control that maintains a steady speed in a machine (as by controlling the supply of fuel)
the head of a state government

governor (verb)	govern (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