vest vs vestment

vest and vestment both are nouns.

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

vest (noun)	vestment (noun)
a collarless men's undergarment for the upper part of the body	gown (especially ceremonial garments) worn by the clergy
a man's sleeveless garment worn underneath a coat

vest (verb)	vestment (verb)
clothe formally; especially in ecclesiastical robes
clothe oneself in ecclesiastical garments
place (authority, property, or rights) in the control of a person or group of persons
become legally vested
provide with power and authority