merge vs integrate

merge and integrate both are verbs.

Word	Noun	Adjective	Verb	Adverb
merge	No	No	Yes	No
integrate	No	No	Yes	No

As verbs, integrate is a hypernym of merge; that is, integrate is a word with a broader meaning than merge:

merge (verb)	integrate (verb)
become one	make into a whole or make part of a whole
mix together different elements	become one; become integrated
join or combine	calculate the integral of; calculate by integration
	open (a place) to members of all races and ethnic groups