colloquialism vs shady

colloquialism is a noun but shady is not a noun.

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

colloquialism (noun)	shady (noun)
a colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speech

colloquialism (adjective)	shady (adjective)
	quiet, dark, or concealed
	of questionable honesty or legality
	not as expected
	filled with shade