Centaur vs jade

Centaur

noun
  • A skillful horseman or horsewoman. 

  • One of a race of monsters having a head, torso, and arms of a man, and the body and legs of a horse. Often depicted as rowdy drunkards, with Chiron being a notable exception. 

  • A U.S. upper stage, with a restartable liquid-propellant engine, used with an Atlas or Titan booster to launch satellites and probes. 

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

jade

noun
  • A horse too old to be put to work. 

  • A bad-tempered or disreputable woman. 

  • A succulent plant, Crassula ovata. 

  • A semiprecious stone, either nephrite or jadeite, generally green or white in color, often used for carving figurines. 

  • A bright shade of slightly bluish or greyish green, typical of polished jade stones. 

verb
  • To fatigue, tire, or weary (someone or something). 

adj
  • Of a grayish shade of green, typical of jade stones. 

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