colloquialism vs dickey

colloquialism and dickey both are nouns.

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

colloquialism (noun)	dickey (noun)
a colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speech	a man's detachable insert (usually starched) to simulate the front of a shirt
	a small third seat in the back of an old-fashioned two-seater

colloquialism (adjective)	dickey (adjective)
	(British informal) faulty