Australian spelling vs sulphurous

Australian spelling is a noun but sulphurous is not a noun.

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

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

Australian spelling (adjective)	sulphurous (adjective)
	of or related to or containing sulfur or derived from sulfur
	characterized by oppressive heat and humidity
	harsh or corrosive in tone