quantisation vs Australian spelling

quantisation and Australian spelling both are nouns.

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

quantisation (noun)	Australian spelling (noun)
the act of dividing into quanta or expressing in terms of quantum theory	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')