urbanisation vs Australian spelling

urbanisation and Australian spelling both are nouns.

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

urbanisation (noun)	Australian spelling (noun)
the social process whereby cities grow and societies become more urban	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')
the condition of being urbanized