centaur vs vishap

centaur

noun
  • A mythical beast having a horse's body with a man's head and torso in place of the head and neck of the horse. 

  • An icy planetoid that orbits the Sun between Jupiter and Neptune. 

  • A chess-playing team comprising a human player and a computer who work together. 

vishap

noun
  • a dragon in Armenian mythology closely associated with water 

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