headhunter vs barbarian

headhunter and barbarian both are nouns.

Word	Noun	Adjective	Verb	Adverb
headhunter	Yes	No	No	No
barbarian	Yes	Yes	No	No

As nouns, barbarian is a hypernym of headhunter; that is, barbarian is a word with a broader meaning than headhunter:

headhunter: a savage who cuts off and preserves the heads of enemies as trophies
barbarian: a member of an uncivilized people

Other hypernyms of headhunter include savage.

headhunter (noun)	barbarian (noun)
a savage who cuts off and preserves the heads of enemies as trophies	a member of an uncivilized people
a recruiter of personnel (especially for corporations)	a crude uncouth ill-bred person lacking culture or refinement

headhunter (adjective)	barbarian (adjective)
	without civilizing influences