line-shooter vs blowhard

line-shooter and blowhard both are nouns.

Word	Noun	Adjective	Verb	Adverb
line-shooter	Yes	No	No	No
blowhard	Yes	No	No	No

As nouns, line-shooter and blowhard are synonyms defined as:

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

line-shooter (noun)	blowhard (noun)
a very boastful and talkative person	a very boastful and talkative person