mess up vs mix up

mess up

verb
  • To cause a problem with; to introduce an error or mistake in; to make muddled or confused; spoil; ruin. 

  • To damage; injure. 

  • To manhandle; beat up; rough up. 

  • To make a mess of; to untidy, disorder, soil, or muss. 

  • To botch, bungle; to perform poorly on. 

  • To cause (another person) to make unwanted mistakes in a given task, usually through distraction or obnoxious behavior. 

  • To make a mistake; to do something incorrectly; to perform poorly. 

  • To discombobulate, utterly confuse, or confound psychologically; to throw into a state of mental disarray. 

mix up

verb
  • To confuse or reverse. 

  • To become involved with, especially socially or romantically. 

  • To prepare something from ingredients that are mixed. 

  • To shuffle. 

  • To combine thoroughly. 

  • To mix or blend thoroughly and completely. 

noun
  • A mix, blend, or variety. 

  • A confusion or reversal. 

How often have the words mess up and mix up occurred in a corpus of books? (source: Google Ngram Viewer )