vest vs singlet

vest and singlet both are nouns.

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

As nouns, vest and singlet are synonyms defined as:

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

Other synonyms of vest include undershirt.

vest (noun)	singlet (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

vest (verb)	singlet (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