carcass vs tortoise shell

carcass

noun
  • An early incendiary ship-to-ship projectile consisting of an iron shell filled with saltpetre, sulphur, resin, turpentine, antimony and tallow with vents for flame. 

  • The body of a slaughtered animal, stripped of unwanted viscera, etc. 

  • The framework of a structure, especially one not normally seen. 

  • The body of a dead human, a corpse. 

  • The body of a dead animal. 

tortoise shell

noun
  • The shell of a tortoise, sometimes inaccurately the shell of a turtle, or that material. 

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