seraph vs sprite

seraph

noun
  • A six-winged angel; one of the highest choir or order of angels in Christian angelology, ranked above cherubim, and below God. They are the 5th-highest order of angels in Jewish angelology. A detailed description can be found at the beginning of Isaiah chapter 6. 

sprite

noun
  • An elf; a fairy; a goblin. 

  • A two-dimensional image or animation that is integrated into a larger scene. 

  • The green woodpecker, or yaffle (Picus viridis). 

  • An electrical discharge that occurs high above the cumulonimbus cloud of an active thunderstorm. 

  • An apparition; ghost 

  • A spayed female ferret. 

  • Any of various African damselflies of the genus Pseudagrion (of which, Australian species are named riverdamsels). 

  • A spirit; a soul; a shade. 

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