boneyard vs soulscot

boneyard

noun
  • A graveyard. 

  • A dumpsite for obsolete or unusable aircraft. 

  • In the game of dominoes, the pile of upside-down pieces that have yet to be used. 

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 boneyard and soulscot occurred in a corpus of books? (source: Google Ngram Viewer )