Australian spelling vs catholic metre

Australian spelling and catholic metre both are nouns.

Word	Noun	Adjective	Verb	Adverb
Australian spelling	Yes	No	No	No
catholic metre	Yes	No	No	No

Australian spelling (noun)	catholic metre (noun)
English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')	a unit of length equivalent to the length of a free seconds pendulum; differs from the modern metre by half a centimetre, introduced by Tito Livio Burattini in 1675.