severalise vs Australian spelling

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

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

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

severalise (verb)	Australian spelling (verb)
mark as different
distinguish or separate