dioptre vs Australian spelling

dioptre and Australian spelling both are nouns.

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

dioptre (noun)	Australian spelling (noun)
a unit of measurement of the refractive power of a lens which is equal to the reciprocal of the focal length measured in meters; used by oculists	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')