polymerise vs Australian spelling

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

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

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

polymerise (verb)	Australian spelling (verb)
undergo polymerization
cause (a compound) to polymerize