oppressive vs tyrannical

oppressive

adj
  • Tyrannical or exercising unjust power. 

  • Hot and humid of the weather. 

  • Burdensome or difficult to bear. 

  • Weighing heavily on the spirit; intense, or overwhelming 

tyrannical

adj
  • Despotic, oppressive, or authoritarian. 

  • Of, or relating to tyranny or a tyrant. 

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