depraved vs sicko

depraved

adj
  • Perverted or extremely wrong in a moral sense. 

sicko

adj
  • Characterized by depraved tastes or habits; deviant. 

noun
  • A person with unpleasant tastes, views or habits. 

  • A physically ill person. 

  • A mentally ill person. 

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