nil vs zippo

nil and zippo both are nouns.

Word	Noun	Adjective	Verb	Adverb
nil	Yes	No	No	No
zippo	Yes	No	No	No

As nouns, nil and zippo are synonyms defined as:

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

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

nil (noun)	zippo (noun)
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