crazy vs psycho

crazy

adj
  • Of unsound mind; insane; demented. 

  • Out of control. 

  • In love; experiencing romantic feelings. 

  • Very excited or enthusiastic. 

  • Very unexpected; wildly surprising. 

adv
  • Very, extremely. 

noun
  • An insane or eccentric person; a crackpot. 

  • Eccentric behaviour; lunacy; craziness. 

psycho

adj
  • Psychotic or otherwise insane. 

noun
  • A person who acts in a bizarre or dangerous manner. 

  • A class, at a college or university, in which psychology is taught. 

  • A person who is psychotic or otherwise insane. 

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