flesher vs headsman

flesher

noun
  • A butcher. 

  • A person who removes the flesh from the skin during the making of leather. 

  • A tool used to remove the flesh from the skin during the making of leather. 

headsman

noun
  • One in command of a whaling vessel. 

  • A labourer in a colliery who transports the coal from the workings to the horseway, and who is oftentimes assisted by a younger worker called a foal. 

  • An executioner whose method of dispatching the condemned is decapitation. 

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