charley-horse vs colloquialism

charley-horse and colloquialism both are nouns.

Word	Noun	Adjective	Verb	Adverb
charley-horse	Yes	No	No	No
colloquialism	Yes	No	No	No

charley-horse (noun)	colloquialism (noun)
a muscular cramp (especially in the thigh or calf) following vigorous exercise	a colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speech