alchemy vs obeah

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. 

obeah

noun
  • A magician or witch doctor of the magic craft. 

  • A spell performed in the practice of the magic craft; an item associated with such a spell. 

  • A form of folk magic, medicine or witchcraft originating in Africa and practised in parts of the Caribbean. 

verb
  • To bewitch using this kind of folk magic. 

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