slang vs tummy

slang and tummy both are nouns.

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

slang (noun)	tummy (noun)
a characteristic language of a particular group (as among thieves)	an enlarged and muscular saclike organ of the alimentary canal; the principal organ of digestion
informal language consisting of words and expressions that are not considered appropriate for formal occasions; often vituperative or vulgar	slang for a paunch