nada vs null

nada and null both are nouns.

Word	Noun	Adjective	Verb	Adverb
nada	Yes	No	No	No
null	Yes	Yes	No	No

As nouns, nada and null are synonyms defined as:

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

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

nada (noun)	null (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

nada (adjective)	null (adjective)
	lacking any legal or binding force