centring vs Canadian spelling

centring and Canadian spelling both are nouns.

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

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