fogey vs colloquialism

fogey and colloquialism both are nouns.

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

fogey (noun)	colloquialism (noun)
someone whose style is out of fashion	a colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speech