slang vs jargon

slang and jargon both are nouns.

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

As nouns, slang and jargon are synonyms defined as:

slang and jargon: a characteristic language of a particular group (as among thieves)

Other synonyms of slang include argot, cant, lingo, patois, vernacular.

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