jargon vs uncool

jargon is a noun but uncool is not a noun.

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

jargon (noun)	uncool (noun)
a characteristic language of a particular group (as among thieves)
specialized technical terminology characteristic of a particular subject
a colorless (or pale yellow or smoky) variety of zircon

jargon (adjective)	uncool (adjective)
	(spoken slang) unfashionable and boring