alter vs doctor

alter

verb
  • To change the form or structure of. 

  • To castrate, neuter or spay (a dog or other animal). 

  • To tailor clothes to make them fit. 

  • To become different. 

  • To affect mentally, as by psychotropic drugs or illness. 

noun
  • An identity or headmate of a person with dissociative identity disorder (previously known as multiple personality disorder). A member of a system. 

doctor

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

  • To act as a medical doctor to. 

  • To act as a medical doctor. 

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

  • 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 alter and doctor occurred in a corpus of books? (source: Google Ngram Viewer )