Australian spelling vs epicentre

Australian spelling and epicentre both are nouns.

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

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