colloquialism vs gloomy Gus

colloquialism and gloomy Gus both are nouns.

Word	Noun	Adjective	Verb	Adverb
colloquialism	Yes	No	No	No
gloomy Gus	Yes	No	No	No

colloquialism (noun)	gloomy Gus (noun)
a colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speech	someone with a habitually sullen or gloomy expression