lenient vs oppressive

lenient

adj
  • Lax; not strict; tolerant of dissent or deviation 

noun
  • A lenitive; an emollient. 

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 

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