demigod vs omnipotent

demigod

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

  • Someone held up for reverence as a supreme example. 

omnipotent

noun
  • An omnipotent being. 

adj
  • Having unlimited power, force or authority. 

  • Describing a cell (especially a stem cell) that is capable of developing into any type of cell or forming any type of tissue (also called a totipotent cell). 

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