squelcher vs colloquialism

squelcher and colloquialism both are nouns.

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

squelcher (noun)	colloquialism (noun)
an electric circuit that cuts off a receiver when the signal becomes weaker than the noise	a colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speech
a crushing remark