commoner vs cypher

commoner and cypher both are nouns.

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

As nouns, cypher is a hyponym of commoner; that is, cypher is a word with a more specific, narrower meaning than commoner:

commoner (noun)	cypher (noun)
a person who holds no title	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

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