bier vs cacolet

bier

noun
  • A litter to transport the corpse of a dead person. 

  • A platform or stand where a body or coffin is placed. 

  • A count of forty threads in the warp or chain of woollen cloth. 

cacolet

noun
  • A single litter mounted on a pack animal. 

  • One of a pair of chairs or litters mounted on a pack animal (horse, mule, camel) 

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