centring vs Australian spelling

centring and Australian spelling both are nouns.

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

centring (noun)	Australian spelling (noun)
(American football) putting the ball in play by passing it (between the legs) to a back	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')
the concentration of attention or energy on something