knock-down-and-drag-out vs colloquialism

knock-down-and-drag-out is not a noun while colloquialism is a noun.

Word	Noun	Adjective	Verb	Adverb
knock-down-and-drag-out	No	Yes	No	No
colloquialism	Yes	No	No	No

knock-down-and-drag-out (noun)	colloquialism (noun)
	a colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speech

knock-down-and-drag-out (adjective)	colloquialism (adjective)
extremely violent