confuse vs doctor

confuse

verb
  • To mix up, muddle up (one thing with another); to mistake (one thing for another). 

  • to puzzle, perplex, baffle, bewilder (somebody); to afflict by being complicated, contradictory, or otherwise difficult to understand 

  • To mix thoroughly; to confound; to disorder. 

  • To be confused. 

doctor

verb
  • To alter or make obscure, as with the intention to deceive, especially a document. 

  • To act as a medical doctor to. 

  • To physically alter (medically or surgically) a living being in order to change growth or behavior. 

  • To act as a medical doctor. 

  • To genetically alter an extant species. 

  • To make (someone) into an (academic) doctor; to confer a doctorate upon. 

  • To adulterate, drug, or poison (drink). 

noun
  • A physician; a member of the medical profession; one who is trained and licensed to heal the sick or injured. The final examination and qualification may award a doctor degree in which case the post-nominal letters are D.O., DPM, M.D., DMD, DDS, in the US or MBBS in the UK. 

  • A person who has attained a doctorate, such as a Ph.D. or Th.D. or one of many other terminal degrees conferred by a college or university. 

  • A veterinarian; a medical practitioner who treats non-human animals. 

  • A fish, the friar skate. 

  • A nickname for a person who has special knowledge or talents to manipulate or arrange transactions. 

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