storm centre vs Australian spelling

storm centre and Australian spelling both are nouns.

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

storm centre (noun)	Australian spelling (noun)
the central area or place of lowest barometric pressure within a storm	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')
a center of trouble or disturbance