focusing vs centring

focusing and centring both are nouns.

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

As nouns, focusing and centring are synonyms defined as:

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

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

focusing (noun)	centring (noun)
the act of bringing into focus	(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