Australian spelling vs dichotomise

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

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

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

Australian spelling (verb)	dichotomise (verb)
	divide into two opposing groups or kinds