yoghurt vs Australian spelling

yoghurt and Australian spelling both are nouns.

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

yoghurt (noun)	Australian spelling (noun)
a custard-like food made from curdled milk	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')