nanometre vs Australian spelling

nanometre and Australian spelling both are nouns.

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

nanometre (noun)	Australian spelling (noun)
a metric unit of length equal to one billionth of a meter	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')