alchemy vs voodoo

alchemy

noun
  • Any elaborate transformation process or algorithm. 

  • The causing of any sort of mysterious sudden transmutation. 

  • The premodern and early modern study of physical changes, particularly in Europe, Arabia, and China and chiefly in pursuit of an elixir of immortality, a universal panacea, and/or a philosopher's stone able to transmute base metals into gold, eventually developing into chemistry. 

voodoo

noun
  • Any sort of magical or irrational approach to a problem. 

  • Any of a group of related religious practices found chiefly in and around the Caribbean, particularly in Haiti and Louisiana. 

  • The spiritual beliefs of the Ewe/Fon of West Africa, practiced chiefly in Benin and in the south of Togo. 

verb
  • To bewitch someone or something using voodoo 

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