mumbo jumbo vs slang

mumbo jumbo

noun
  • Any confusing or meaningless speech; nonsense, gibberish. 

  • 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. 

slang

noun
  • An item of slang; a slang word or expression. 

  • A curse word. 

  • The specialized language of a social group, sometimes used to conceal one's meaning from outsiders; cant. 

  • A particular variety of slang; the slang used by a particular group. 

  • Language outside of conventional usage and in the informal register. 

  • Language that is unique to a particular profession or subject; jargon. 

  • Any long, narrow piece of land; a promontory. 

verb
  • To sell (especially illegal drugs). 

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