lean vs gravitate

lean is a noun but gravitate is not a noun.

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

As verbs, gravitate is a hyponym of lean; that is, gravitate is a word with a more specific, narrower meaning than lean:

Other hyponyms of lean include take kindly to, suffer.

lean (noun)	gravitate (noun)
the property possessed by a line or surface that departs from the vertical

lean (adjective)	gravitate (adjective)
lacking in mineral content or combustible material
lacking excess flesh
not profitable or prosperous
containing little excess

lean (verb)	gravitate (verb)
rely on for support	move due to the pull of gravitation
cause to lean or incline	be attracted to
to incline or bend from a vertical position	move toward
cause to lean to the side
have a tendency or disposition to do or be something; be inclined