cynanthropy vs psychopathy

cynanthropy

noun
  • A delusion in which a person believes he or she is transformed into a dog. 

  • A shape-shifting ability between human and canine forms. 

psychopathy

noun
  • A personality disorder indicated by a pattern of lying, exploitation, heedlessness, arrogance, sexual promiscuity, low self-control, and lack of empathy and remorse. Violent and criminal offenses may be indicative of this disorder. 

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