contentment vs third degree

contentment

noun
  • happiness in one's situation; satisfaction 

  • The neurophysiological experience of satisfaction and being at ease in one's situation, body, and/or mind. 

  • The state or degree of being contented or satisfied. 

third degree

noun
  • Intensive rough interrogation in order to extract information or a confession 

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