Australian spelling vs myelinisation

Australian spelling and myelinisation both are nouns.

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

Australian spelling (noun)	myelinisation (noun)
English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')	the development of a myelin sheath around a nerve fiber