colloquialism vs headhunter

colloquialism and headhunter both are nouns.

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

colloquialism (noun)	headhunter (noun)
a colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speech	a savage who cuts off and preserves the heads of enemies as trophies
	a recruiter of personnel (especially for corporations)