sweet Fanny Adams vs goose egg

sweet Fanny Adams and goose egg both are nouns.

Word	Noun	Adjective	Verb	Adverb
sweet Fanny Adams	Yes	No	No	No
goose egg	Yes	No	No	No

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

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

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

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