sanitisation vs Australian spelling

sanitisation and Australian spelling both are nouns.

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

sanitisation (noun)	Australian spelling (noun)
making something sanitary (free of germs) as by sterilizing	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')