Australian spelling vs universal metre

Australian spelling and universal metre both are nouns.

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

Australian spelling (noun)	universal 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.