oppressive vs sudorific

oppressive

adj
  • Hot and humid of the weather. 

  • Tyrannical or exercising unjust power. 

  • Burdensome or difficult to bear. 

  • Weighing heavily on the spirit; intense, or overwhelming 

sudorific

adj
  • In a state of perspiration; covered in sweat; sudoriferous, sweaty. 

  • That produces sweating. 

noun
  • A medicine that produces sweating. 

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