fiend vs goblin

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). 

goblin

noun
  • One of various hostile supernatural creatures, now especially (fantasy literature) a malevolent and grotesque diminutive humanoid, often associated with orcs or trolls. 

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