cypher vs compute

cypher is a noun but compute is not a noun.

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

As verbs, cypher and compute are synonyms defined as:

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

cypher (noun)	compute (noun)
a secret method of writing
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

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