sadistic vs sicko

sadistic

adj
  • Of behaviour which gives pleasure in the pain or humiliation of others. 

  • Delighting in or feeling pleasure from the pain or humiliation of others. 

  • Causing a high degree of pain or humiliation. 

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 sadistic and sicko occurred in a corpus of books? (source: Google Ngram Viewer )