contrivance vs stupidity

contrivance

noun
  • Something overly artful or artificial. 

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

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

stupidity

noun
  • An act that is stupid. 

  • The property of being stupid. 

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