colloquialism vs rattrap

colloquialism and rattrap both are nouns.

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

colloquialism (noun)	rattrap (noun)
a colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speech	a trap for catching rats
	filthy run-down dilapidated housing
	a difficult entangling situation