brag vs boss

brag and boss both are nouns.

Word	Noun	Adjective	Verb	Adverb
brag	Yes	Yes	Yes	No
boss	Yes	Yes	Yes	No

As adjectives, brag and boss are synonyms defined as:

brag (noun)	boss (noun)
an instance of boastful talk	a circular rounded projection or protuberance
	a person responsible for hiring workers
	a person who exercises control over workers
	a leader in a political party who controls votes and dictates appointments
	a person who exercises control and makes decisions

brag (adjective)	boss (adjective)
exceptionally good	exceptionally good

brag (verb)	boss (verb)
show off	raise in a relief