optical fibre vs Australian spelling

optical fibre and Australian spelling both are nouns.

Word	Noun	Adjective	Verb	Adverb
optical fibre	Yes	No	No	No
Australian spelling	Yes	No	No	No

optical fibre (noun)	Australian spelling (noun)
a very thin fiber made of glass that functions as a waveguide for light; used in bundles to transmit images	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')