mutiny vs tractability

mutiny

verb
  • To commit a mutiny. 

noun
  • An organized rebellion against a legally constituted authority, especially by seamen against their officers. 

  • Violent commotion; tumult; strife. 

tractability

noun
  • The state of being tractable or docile; docility; tractableness. 

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