Australian spelling vs grape arbour

Australian spelling and grape arbour both are nouns.

Word	Noun	Adjective	Verb	Adverb
Australian spelling	Yes	No	No	No
grape arbour	Yes	No	No	No

Australian spelling (noun)	grape arbour (noun)
English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')	an arbor where grapes are grown