mix up vs baffle

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

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

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

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

mix up (noun)	baffle (noun)
	a flat plate that controls or directs the flow of fluid or energy

mix up (verb)	baffle (verb)
cause to be perplexed or confounded	restrain the emission of (sound, fluid, etc.)
assemble without order or sense	be a mystery or bewildering to
	hinder or prevent (the efforts, plans, or desires) of