engrossment vs state of mind

engrossment and state of mind both are nouns.

Word	Noun	Adjective	Verb	Adverb
engrossment	Yes	No	No	No
state of mind	Yes	No	No	No

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

Other hypernyms of engrossment include cognitive state.

engrossment (noun)	state of mind (noun)
the quality of being intent and concentrated	the state of a person's cognitive processes
the mental state of being preoccupied by something	a temporary psychological state
complete attention; intense mental effort