demigod vs paladin

demigod

noun
  • Someone held up for reverence as a supreme example. 

  • A half-god or hero; the offspring of a deity and a mortal. 

paladin

noun
  • A defender or advocate of a noble cause. 

  • Any of the twelve Companions of the court of Emperor Charlemagne. 

  • A heroic champion, especially a knight. 

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