Australian spelling vs decimalise

Australian spelling is a noun but decimalise is not a noun.

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

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

Australian spelling (verb)	decimalise (verb)
	change to the decimal system
	change from fractions to decimals