null vs goose egg

null and goose egg both are nouns.

Word	Noun	Adjective	Verb	Adverb
null	Yes	Yes	No	No
goose egg	Yes	No	No	No

As nouns, null and goose egg are synonyms defined as:

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

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

null (noun)	goose egg (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

null (adjective)	goose egg (adjective)
lacking any legal or binding force