plumb vs colloquialism

plumb and colloquialism both are nouns.

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

plumb (noun)	colloquialism (noun)
the metal bob of a plumb line	a colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speech

plumb (adjective)	colloquialism (adjective)
exactly vertical

plumb (verb)	colloquialism (verb)
adjust with a plumb line so as to make vertical
measure the depth of something
examine thoroughly and in great depth
weight with lead

plumb (adverb)	colloquialism (adverb)
conforming to the direction of a plumb line
exactly
completely; used as intensifiers