Australian spelling vs nerve centre

Australian spelling and nerve centre both are nouns.

Word	Noun	Adjective	Verb	Adverb
Australian spelling	Yes	No	No	No
nerve centre	Yes	No	No	No

Australian spelling (noun)	nerve centre (noun)
English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')	a cluster of nerve cells governing a specific bodily process
	a center that provides information and control