horoscopy vs magnetism

horoscopy

noun
  • The casting of horoscopes. 

  • The aspect of the stars at the time of a person's birth. 

magnetism

noun
  • The science which treats of magnetic phenomena. 

  • The property of being magnetic. 

  • Animal magnetism. 

  • Power of attraction; power to excite the feelings and to gain the affections. 

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