colloquialism vs ropey

colloquialism is a noun but ropey is not a noun.

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

colloquialism (noun)	ropey (noun)
a colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speech

colloquialism (adjective)	ropey (adjective)
	of or resembling rope (or ropes) in being long and strong
	(British informal) very poor in quality
	forming viscous or glutinous threads