Australian spelling vs quantise

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

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

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

Australian spelling (verb)	quantise (verb)
	apply quantum theory to; restrict the number of possible values of (a quantity) or states of (a physical entity or system) so that certain variables can assume only certain discrete magnitudes that are integral multiples of a common factor
	approximate (a signal varying continuously in amplitude) by one whose amplitude is restricted to a prescribed set of discrete values