pip-squeak vs cipher

pip-squeak and cipher both are nouns.

Word	Noun	Adjective	Verb	Adverb
pip-squeak	Yes	No	No	No
cipher	Yes	No	Yes	No

As nouns, cipher is a hypernym of pip-squeak; that is, cipher is a word with a broader meaning than pip-squeak:

Other hypernyms of pip-squeak include cypher, nobody, nonentity.

pip-squeak (noun)	cipher (noun)
someone who is small and insignificant	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

pip-squeak (verb)	cipher (verb)
	make a mathematical calculation or computation
	convert ordinary language into code