centring vs centering

centring and centering both are nouns.

Word	Noun	Adjective	Verb	Adverb
centring	Yes	No	No	No
centering	Yes	No	No	No

As nouns, centring and centering are synonyms defined as:

centring and centering: (American football) putting the ball in play by passing it (between the legs) to a back

Other synonyms of centring include snap.

As nouns, centring and centering are synonyms defined as:

centring and centering: the concentration of attention or energy on something

Other synonyms of centring include direction, focal point, focus, focusing, focussing.

centring (noun)	centering (noun)
(American football) putting the ball in play by passing it (between the legs) to a back	(American football) putting the ball in play by passing it (between the legs) to a back
the concentration of attention or energy on something	the concentration of attention or energy on something