mix up vs mix

mix up is not a noun while mix is a noun.

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

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

mix up (verb)	mix (verb)
cause to be perplexed or confounded	mix together different elements
assemble without order or sense	add as an additional element or part
	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