nil vs Fanny Adams

nil and Fanny Adams both are nouns.

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

As nouns, Fanny Adams is a hyponym of nil; that is, Fanny Adams is a word with a more specific, narrower meaning than nil:

nil: a quantity of no importance; thing (object:), singular, negative pronoun; pronoun, thing, singular; quantifier: negative existential
Fanny Adams: little or nothing at all

Other hyponyms of nil include nihil, bugger all, fuck all, sweet Fanny Adams.

nil (noun)	Fanny Adams (noun)
a quantity of no importance; thing (object:), singular, negative pronoun; pronoun, thing, singular; quantifier: negative existential	nautical term for tinned meat
	little or nothing at all