slangy vs slang

slangy is not a noun while slang is a noun.

Word	Noun	Adjective	Verb	Adverb
slangy	No	Yes	No	No
slang	Yes	No	Yes	No

slangy (noun)	slang (noun)
	a characteristic language of a particular group (as among thieves)
	informal language consisting of words and expressions that are not considered appropriate for formal occasions; often vituperative or vulgar

slangy (adjective)	slang (adjective)
constituting or expressed in slang or given to the use of slang