arse vs slang

arse and slang both are nouns.

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

arse (noun)	slang (noun)
vulgar slang for anus	a characteristic language of a particular group (as among thieves)
the fleshy part of the human body that you sit on	informal language consisting of words and expressions that are not considered appropriate for formal occasions; often vituperative or vulgar