fiend vs werewolf

fiend

noun
  • A devil or demon; a malignant or diabolical being; an evil spirit. 

  • An addict or fanatic. 

  • A very evil person. 

verb
  • To yearn; to be desperate (for something). 

werewolf

noun
  • A person who is transformed or can transform into a wolf or a wolflike human, often said to transform during a full moon. 

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