contrivance vs strategy

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. 

strategy

noun
  • A plan of action intended to accomplish a specific goal. 

  • The science and art of military command as applied to the overall planning and conduct of warfare. 

  • The act of strategizing; the development of effective strategies. 

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