contumacious vs headstrong

contumacious

adj
  • Contemptuous of authority; willfully disobedient; rebellious. 

  • Willfully disobedient to the summons or orders of a court. 

headstrong

adj
  • Determined to do as one pleases, and not as others want. 

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