hellish vs killing

hellish

adj
  • infernal, related or similar to hell 

  • causing great pain, discomfort or distress 

killing

adj
  • That literally deprives of life; lethal, deadly, fatal. 

  • That makes one ‘die’ with laughter; very funny. 

noun
  • A large amount of money. 

  • An instance of someone being killed. 

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