alchemy vs mumbo jumbo

alchemy

noun
  • The causing of any sort of mysterious sudden transmutation. 

  • Any elaborate transformation process or algorithm. 

  • 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. 

mumbo jumbo

noun
  • Any object of superstition; religious words and/or actions which are seen as superstitious or fraudulent. 

  • A deity or other supernatural being said to have been worshipped by certain West African peoples; an idol. 

  • Any confusing or meaningless speech; nonsense, gibberish. 

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