body bag vs catafalque

body bag

noun
  • A non-porous bag designed to contain a human body, used for the storage and transport of corpses. 

catafalque

noun
  • A platform used to display or convey a coffin during a funeral, often ornate. 

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