concert vs mastermind

concert

verb
  • To plan; to devise; to arrange. 

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

  • 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. 

mastermind

verb
  • To act in the role of mastermind. 

noun
  • A person responsible for the highest level of planning and execution of a major operation. 

  • A person with an extraordinary intellect or skill that is markedly superior to his or her peers. 

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