blowhard vs boaster

blowhard and boaster both are nouns.

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

As nouns, blowhard and boaster are synonyms defined as:

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

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