put-down vs colloquialism

put-down and colloquialism both are nouns.

Word	Noun	Adjective	Verb	Adverb
put-down	Yes	No	No	No
colloquialism	Yes	No	No	No

put-down (noun)	colloquialism (noun)
a crushing remark	a colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speech