install vs vest

install is not a noun while vest is a noun.

Word	Noun	Adjective	Verb	Adverb
install	No	No	Yes	No
vest	Yes	No	Yes	No

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

Other hyponyms of install include induct, invest, seat, enthrone, invest.

install (noun)	vest (noun)
	a collarless men's undergarment for the upper part of the body
	a man's sleeveless garment worn underneath a coat

install (verb)	vest (verb)
set up for use	clothe formally; especially in ecclesiastical robes
place	clothe oneself in ecclesiastical garments
put into an office or a position	place (authority, property, or rights) in the control of a person or group of persons
	become legally vested
	provide with power and authority