coffin vs shoetree

coffin

noun
  • The hollow crust or hoof of a horse's foot, below the coronet, in which is the coffin bone. 

  • A storage container for nuclear waste. 

  • The eighth Lenormand card. 

  • A rectangular closed box in which the body of a dead person is placed for burial. 

verb
  • To place in a coffin. 

shoetree

noun
  • A foot-shaped device placed in a shoe to maintain its shape when not being worn. 

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