Fanny Adams vs nil

Fanny Adams and nil both are nouns.

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

As nouns, nil is a hypernym of Fanny Adams; that is, nil is a word with a broader meaning than Fanny Adams:

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

Other hypernyms of Fanny Adams include aught, cipher, cypher, goose egg, nada, naught, nix, nothing, null, zero, zilch, zip, zippo.

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