Centaur vs mutant

Centaur

noun
  • 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 skillful horseman or horsewoman. 

  • 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 

mutant

noun
  • Someone or something that seems strange, abnormal, or bizarre. 

  • That has mutated, with one or more new characteristics from a mutation. 

  • Synonym of mutex 

adj
  • Strange, abnormal, or bizarre. 

  • Of, relating to, undergoing (i.e. mutating), or resulting from change or mutation; that has undergone mutation. 

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