obeah vs obi

obeah

verb
  • To bewitch using this kind of folk magic. 

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. 

obi

noun
  • A sash worn with a kimono. 

  • A strip of paper looped around a book or other product. 

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