bier vs decedent

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. 

decedent

noun
  • A dead person. 

adj
  • Removing; departing; deceased. 

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