Australian spelling vs vapour

Australian spelling and vapour both are nouns.

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

Australian spelling (noun)	vapour (noun)
English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')	the process of becoming a vapor
	a visible suspension in the air of particles of some substance