popularise vs Australian spelling

popularise is not a noun while Australian spelling is a noun.

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

popularise (noun)	Australian spelling (noun)
	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')

popularise (verb)	Australian spelling (verb)
make understandable to the general public
cater to popular taste to make popular and present to the general public; bring into general or common use