jade vs yearling

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. 

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

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

yearling

noun
  • A racehorse that is considered to be one year old until a subsequent January 1st. 

  • A sophomore at West Point military academy. 

  • An animal that is between one and two years old; one that is in its second year (but not yet two full years old). 

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