slang vs wank

slang and wank both are nouns.

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

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

slang (verb)	wank (verb)
abuse with coarse language	get sexual gratification through self-stimulation
fool or hoax
use slang or vulgar language