Australian spelling vs benign tumour

Australian spelling and benign tumour both are nouns.

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

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