bare bones vs colloquialism

bare bones and colloquialism both are nouns.

Word	Noun	Adjective	Verb	Adverb
bare bones	Yes	No	No	No
colloquialism	Yes	No	No	No

bare bones (noun)	colloquialism (noun)
(plural) the most basic facts or elements	a colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speech