ardour vs Australian spelling

ardour and Australian spelling both are nouns.

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

ardour (noun)	Australian spelling (noun)
intense feeling of love	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')
a feeling of strong eagerness (usually in favor of a person or cause)
feelings of great warmth and intensity