charnel house vs soulscot

charnel house

noun
  • a vault or other building in which the bones of the dead are stored 

soulscot

noun
  • A funeral payment, formerly made at the grave, usually to the parish priest in whose church service for the departed had been said; a mortuary. 

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