epicentre vs Australian spelling

epicentre and Australian spelling both are nouns.

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

epicentre (noun)	Australian spelling (noun)
the point on the Earth's surface directly above the focus of an earthquake	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')