full plate armour vs Australian spelling

full plate armour and Australian spelling both are nouns.

Word	Noun	Adjective	Verb	Adverb
full plate armour	Yes	No	No	No
Australian spelling	Yes	No	No	No

full plate armour (noun)	Australian spelling (noun)
a historical type of personal armor made from iron or steel plates entirely encasing the wearer.	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')