singlet vs vest

singlet and vest both are nouns.

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

As nouns, singlet and vest are synonyms defined as:

singlet and vest: a collarless men's undergarment for the upper part of the body

Other synonyms of singlet include undershirt.

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

singlet (verb)	vest (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