epic vs folktale

epic

noun
  • An extended narrative poem in elevated or dignified language, celebrating the feats of a deity, demigod (heroic epic), other legend or traditional hero. 

  • In software development, a large or extended user story. 

  • A series of events considered appropriate to an epic. 

adj
  • Momentously heroic; grand in scale or character 

  • Of or relating to an epic. 

  • That is an epimorphism. 

  • Extending beyond the usual or ordinary. 

folktale

noun
  • A tale or story that is part of the oral tradition of a people or a place. 

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