mix up vs stick

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

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

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

Other hypernyms of mix up include amaze, baffle, beat, bewilder, dumbfound, flummox, get, gravel, mystify, nonplus, perplex, pose, puzzle, stupefy, vex.

mix up (noun)	stick (noun)
	threat of a penalty
	an implement consisting of a length of wood
	a long thin implement resembling a length of wood
	marijuana leaves rolled into a cigarette for smoking
	a lever used by a pilot to control the ailerons and elevators of an airplane
	a long implement (usually made of wood) that is shaped so that hockey or polo players can hit a puck or ball
	informal terms for the leg
	a rectangular quarter pound block of butter or margarine
	a small thin branch of a tree

mix up (verb)	stick (verb)
cause to be perplexed or confounded	be a mystery or bewildering to
assemble without order or sense	saddle with something disagreeable or disadvantageous
	stick to firmly
	come or be in close contact with; stick or hold together and resist separation
	put, fix, force, or implant
	pierce or penetrate or puncture with something pointed
	pierce with a thrust using a pointed instrument
	fasten with an adhesive material like glue
	fasten with or as with pins or nails
	fasten into place by fixing an end or point into something
	cover and decorate with objects that pierce the surface
	be in a certain place and not leave
	be loyal to
	endure
	be a devoted follower or supporter
	be or become fixed