uncool vs vernacular

uncool is not a noun while vernacular is a noun.

Word	Noun	Adjective	Verb	Adverb
uncool	No	Yes	No	No
vernacular	Yes	Yes	No	No

uncool (noun)	vernacular (noun)
	the everyday speech of the people (as distinguished from literary language)
	a characteristic language of a particular group (as among thieves)

uncool (adjective)	vernacular (adjective)
(spoken slang) unfashionable and boring	being or characteristic of or appropriate to everyday language