somewhere vs colloquialism

somewhere and colloquialism both are nouns.

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

somewhere (noun)	colloquialism (noun)
an indefinite or unknown location	a colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speech

somewhere (adverb)	colloquialism (adverb)
in or at or to some place