cipher vs cypher

cipher and cypher both are nouns.

Word	Noun	Adjective	Verb	Adverb
cipher	Yes	No	Yes	No
cypher	Yes	No	Yes	No

As nouns, cipher and cypher are synonyms defined as:

Other synonyms of cipher include cryptograph, secret code.

As nouns, cipher and cypher are synonyms defined as:

As nouns, cipher and cypher are synonyms defined as:

Other synonyms of cipher include nobody, nonentity.

As nouns, cipher and cypher are synonyms defined as:

cipher and cypher: a quantity of no importance; thing (object:), singular, negative pronoun; pronoun, thing, singular; quantifier: negative existential

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

As nouns, cipher and cypher are synonyms defined as:

cipher and cypher: a mathematical element that when added to another number yields the same number

Other synonyms of cipher include 0, nought, zero.

As verbs, cipher and cypher are synonyms defined as:

Other synonyms of cipher include calculate, compute, figure, reckon, work out.

As verbs, cipher and cypher are synonyms defined as:

Other synonyms of cipher include code, encipher, encrypt, inscribe, write in code.

cipher (noun)	cypher (noun)
a secret method of writing	a secret method of writing
a message written in a secret code	a message written in a secret code
a person of no influence	a person of no influence
a quantity of no importance; thing (object:), singular, negative pronoun; pronoun, thing, singular; quantifier: negative existential	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	a mathematical element that when added to another number yields the same number

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