binder vs reaper

binder

noun
  • A machine used in harvesting that ties cut stalks of grain into a bundle. 

  • Someone who binds books; a bookbinder. 

  • A down payment on a piece of real property that secures the payor the right to purchase the property from the payee upon an agreement of terms. 

  • A program or routine that attaches malware to an existing harmless file on the target system. 

  • Someone who binds. 

  • A software mechanism that performs binding. 

  • A dossier. 

  • A chemical or other substance that causes two other substances to form into one. 

  • Material or clothing used in binding or flattening the breasts. 

  • A protein binder. 

  • Something that is used to bind things together, often referring to the mechanism that accomplishes this for a book. 

  • A rubber band. 

  • A cover or holder for unbound papers, pages, etc. 

reaper

noun
  • A machine used to harvest crops. 

  • The recluse spider (Loxosceles and Sicarius spp.). 

  • One who reaps; a person employed to harvest crops from the fields by reaping. 

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