harmonisation vs Australian spelling

harmonisation and Australian spelling both are nouns.

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

harmonisation (noun)	Australian spelling (noun)
singing in harmony	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')
a piece of harmonized music