Australian spelling vs dichotomisation

Australian spelling and dichotomisation both are nouns.

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

Australian spelling (noun)	dichotomisation (noun)
English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')	the act of dividing into two sharply different categories