Australian English spelling vs Australian spelling

Australian English spelling and Australian spelling both are nouns.

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

As nouns, Australian English spelling and Australian spelling are synonyms defined as:

Australian English spelling and Australian spelling: English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')

Other synonyms of Australian English spelling include Australian English orthography.

Australian English spelling (noun)	Australian spelling (noun)
English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')