Australian spelling vs papillary tumour

Australian spelling and papillary tumour both are nouns.

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

Australian spelling (noun)	papillary tumour (noun)
English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')	a benign epithelial tumor forming a rounded mass