boaster vs vaunter

boaster and vaunter both are nouns.

Word	Noun	Adjective	Verb	Adverb
boaster	Yes	No	No	No
vaunter	Yes	No	No	No

As nouns, boaster and vaunter are synonyms defined as:

Other synonyms of boaster include blowhard, braggart, bragger, line-shooter.

boaster (noun)	vaunter (noun)
a very boastful and talkative person	a very boastful and talkative person