magnetism vs voodooism

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. 

voodooism

noun
  • A religious cult, from Haiti, involving witchcraft and sorcery. 

  • Any voodoo practice. 

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