hatstand vs psycho

hatstand

adj
  • Crazy, insane. 

noun
  • A device used to store hats upon, consisting of a vertical pole with a sturdy base to prevent toppling, and an array of pegs to hold the hats. 

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 hatstand and psycho occurred in a corpus of books? (source: Google Ngram Viewer )