concert vs mix up

concert

verb
  • To act in harmony or conjunction; to form combined plans. 

  • To plan; to devise; to arrange. 

  • To plan together; to settle or adjust by conference, agreement, or consultation. 

noun
  • A musical entertainment in which several voices or instruments take part. 

  • Agreement in a design or plan; union formed by mutual communication of opinions and views; accordance in a scheme; harmony; simultaneous action. 

  • Musical accordance or harmony; concord. 

mix up

verb
  • To combine thoroughly. 

  • To become involved with, especially socially or romantically. 

  • To confuse or reverse. 

  • To prepare something from ingredients that are mixed. 

  • To shuffle. 

  • To mix or blend thoroughly and completely. 

noun
  • A mix, blend, or variety. 

  • A confusion or reversal. 

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