disciplinarian vs tyrannical

disciplinarian

adj
  • Relating to discipline. 

noun
  • One who believes in discipline as a tool for regulation or control. 

  • One who exercises discipline. 

tyrannical

adj
  • Despotic, oppressive, or authoritarian. 

  • Of, or relating to tyranny or a tyrant. 

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