engrossment vs centring

engrossment and centring both are nouns.

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

As nouns, centring is a hyponym of engrossment; that is, centring is a word with a more specific, narrower meaning than engrossment:

Other hyponyms of engrossment include centering, direction, focal point, focus, focusing, focussing, specialism, study.

engrossment (noun)	centring (noun)
the quality of being intent and concentrated	(American football) putting the ball in play by passing it (between the legs) to a back
the mental state of being preoccupied by something	the concentration of attention or energy on something
complete attention; intense mental effort