high priestess vs mastermind

high priestess

noun
  • A female clergyman with a higher function than a normal priestess. 

  • A third degree (sometimes forth degree) female witch in Wicca. 

  • the second trump or major arcana card in most traditional tarot decks. 

mastermind

noun
  • A person with an extraordinary intellect or skill that is markedly superior to his or her peers. 

  • A person responsible for the highest level of planning and execution of a major operation. 

verb
  • To act in the role of mastermind. 

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