gravitate vs gravity

gravitate is not a noun while gravity is a noun.

Word	Noun	Adjective	Verb	Adverb
gravitate	No	No	Yes	No
gravity	Yes	No	No	No

gravitate (noun)	gravity (noun)
	a manner that is serious and solemn
	a solemn and dignified feeling
	(physics) the force of attraction between all masses in the universe; especially the attraction of the earth's mass for bodies near its surface

gravitate (verb)	gravity (verb)
move due to the pull of gravitation
be attracted to
move toward