myelinisation vs Australian spelling

myelinisation and Australian spelling both are nouns.

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

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