mopes vs colloquialism

mopes and colloquialism both are nouns.

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

mopes (noun)	colloquialism (noun)
an informal expression for a mildly depressed state	a colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speech