anaesthesia vs Australian spelling

anaesthesia and Australian spelling both are nouns.

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

anaesthesia (noun)	Australian spelling (noun)
loss of bodily sensation with or without loss of consciousness	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')