Australian spelling vs nonmalignant tumour

Australian spelling and nonmalignant tumour both are nouns.

Word	Noun	Adjective	Verb	Adverb
Australian spelling	Yes	No	No	No
nonmalignant tumour	Yes	No	No	No

Australian spelling (noun)	nonmalignant tumour (noun)
English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')	a tumor that is not cancerous