colloquialism vs fogy

colloquialism and fogy both are nouns.

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

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