focusing vs engrossment

focusing and engrossment both are nouns.

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

As nouns, engrossment is a hypernym of focusing; that is, engrossment is a word with a broader meaning than focusing:

Other hypernyms of focusing include absorption, concentration, immersion.

focusing (noun)	engrossment (noun)
the act of bringing into focus	the quality of being intent and concentrated
the concentration of attention or energy on something	the mental state of being preoccupied by something
	complete attention; intense mental effort