Fanny Adams vs obscenity

Fanny Adams and obscenity both are nouns.

Word	Noun	Adjective	Verb	Adverb
Fanny Adams	Yes	No	No	No
obscenity	Yes	No	No	No

Fanny Adams (noun)	obscenity (noun)
nautical term for tinned meat	an obscene act
little or nothing at all	the trait of behaving in an obscene manner
	an offensive or indecent word or phrase