mix up vs vex

mix up and vex both are verbs.

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

As verbs, vex is a hypernym of mix up; that is, vex is a word with a broader meaning than mix up:

mix up (verb)	vex (verb)
cause to be perplexed or confounded	be a mystery or bewildering to
assemble without order or sense	subject to prolonged examination, discussion, or deliberation
	change the arrangement or position of
	cause annoyance in; disturb, especially by minor irritations
	disturb the peace of mind of; afflict with mental agitation or distress