call centre vs Australian spelling

call centre and Australian spelling both are nouns.

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

call centre (noun)	Australian spelling (noun)
a center equipped to handle a large volume of telephone calls (especially for taking orders or serving customers)	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')