cause vs contrivance

cause

noun
  • A goal, aim or principle, especially one which transcends purely selfish ends. 

  • Sufficient reason for a state, as of emotion. 

  • A suit or action in court; any legal process by which a party endeavors to obtain his claim, or what he regards as his right; case; ground of action. 

  • The source of, or reason for, an event or action; that which produces or effects a result. 

verb
  • To actively produce as a result, by means of force or authority. 

  • To set off an event or action. 

contrivance

noun
  • A means, such as an elaborate plan or strategy, to accomplish a certain objective. 

  • Something overly artful or artificial. 

  • A (mechanical) device to perform a certain task. 

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