secularisation vs Australian spelling

secularisation and Australian spelling both are nouns.

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

secularisation (noun)	Australian spelling (noun)
transfer of property from ecclesiastical to civil possession	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')
the activity of changing something (art or education or society or morality etc.) so it is no longer under the control or influence of religion