merge vs mix

merge is not a noun while mix is a noun.

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

As verbs, merge and mix are synonyms defined as:

Other synonyms of merge include blend, coalesce, combine, commingle, conflate, flux, fuse, immix, meld.

merge (noun)	mix (noun)
	the act of mixing together
	an event that combines things in a mixture
	a commercially prepared mixture of dry ingredients

merge (verb)	mix (verb)
become one	mix together different elements
mix together different elements	add as an additional element or part
join or combine	combine (electronic signals)
	to bring or combine together or with something else
	mix so as to make a random order or arrangement
	open (a place) to members of all races and ethnic groups