Fanny Adams vs cypher

Fanny Adams and cypher both are nouns.

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

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

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

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

Fanny Adams (noun)	cypher (noun)
nautical term for tinned meat	a secret method of writing
little or nothing at all	a message written in a secret code
	a person of no influence
	a quantity of no importance; thing (object:), singular, negative pronoun; pronoun, thing, singular; quantifier: negative existential
	a mathematical element that when added to another number yields the same number

Fanny Adams (verb)	cypher (verb)
	make a mathematical calculation or computation
	convert ordinary language into code