slang vs pong

slang and pong both are nouns.

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

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