engross vs pore

engross is not a noun while pore is a noun.

Word	Noun	Adjective	Verb	Adverb
engross	No	No	Yes	No
pore	Yes	No	Yes	No

As verbs, pore is a hypernym of engross; that is, pore is a word with a broader meaning than engross:

Other hypernyms of engross include center, centre, concentrate, focus, rivet.

engross (noun)	pore (noun)
	any small opening in the skin or outer surface of an animal
	a minute epidermal pore in a leaf or stem through which gases and water vapor can pass
	any tiny hole admitting passage of a liquid (fluid or gas)

engross (verb)	pore (verb)
consume all of one's attention or time	direct one's attention on something
devote (oneself) fully to