deprave vs violate

deprave

verb
  • To speak ill of; to depreciate; to malign; to revile 

  • To make bad or worse; to vitiate; to corrupt 

violate

verb
  • To break or disregard (a rule or convention). 

  • To cite (a person) for a parole violation. 

  • To rape. 

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