crazy vs psychopath

crazy

noun
  • An insane or eccentric person; a crackpot. 

  • Eccentric behaviour; lunacy; craziness. 

adj
  • Out of control. 

  • Of unsound mind; insane; demented. 

  • In love; experiencing romantic feelings. 

  • Very excited or enthusiastic. 

  • Very unexpected; wildly surprising. 

adv
  • Very, extremely. 

psychopath

noun
  • A person who perpetrates especially gruesome or bizarre violent acts. 

  • A person with a personality disorder indicated by a pattern of lying, cunning, manipulating, glibness, exploiting, heedlessness, arrogance, delusions of grandeur, carelessness, low self-control, disregard for morality, lack of acceptance of responsibility, callousness, and lack of empathy and remorse. Such an individual may be especially prone to violent and criminal offenses. 

  • A person diagnosed with antisocial or dissocial personality disorder. 

  • A person with no moral conscience. 

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