popularisation vs Australian spelling

popularisation and Australian spelling both are nouns.

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

popularisation (noun)	Australian spelling (noun)
the act of making something attractive to the general public	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')
an interpretation that easily understandable and acceptable