exorcise vs voodoo

exorcise

verb
  • To rid (a person, place or thing) of an evil spirit. 

  • To drive out (an evil spirit) from a person, place or thing, especially by an incantation or prayer. 

voodoo

verb
  • To bewitch someone or something using voodoo 

noun
  • 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. 

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

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