spoilt vs Australian spelling

spoilt is not a noun while Australian spelling is a noun.

Word	Noun	Adjective	Verb	Adverb
spoilt	No	Yes	No	No
Australian spelling	Yes	No	No	No

spoilt (noun)	Australian spelling (noun)
	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')

spoilt (adjective)	Australian spelling (adjective)
affected by blight; anything that mars or prevents growth or prosperity
having the character or disposition harmed by pampering or oversolicitous attention
(of foodstuffs) not in an edible or usable condition