mumbo jumbo vs mysticism

mumbo jumbo

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

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

  • Any confusing or meaningless speech; nonsense, gibberish. 

mysticism

noun
  • The beliefs, ideas, or thoughts of mystics. 

  • A transcendental union of soul or mind with the divine reality or divinity. 

  • A doctrine of direct communication or spiritual intuition of divine truth. 

  • Obscure thoughts and speculations. 

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