naught vs null

naught and null both are nouns.

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

As nouns, naught and null are synonyms defined as:

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

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

naught (noun)	null (noun)
complete failure	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

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