illusion vs obeah

illusion

noun
  • A magician’s trick. 

  • A misapprehension; a belief in something that is in fact not true. 

  • Anything that seems to be something that it is not. 

  • The state of being deceived or misled. 

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 illusion and obeah occurred in a corpus of books? (source: Google Ngram Viewer )