agriculturalist vs reaper

agriculturalist

noun
  • A farmer; one involved with agrarian business. 

  • An expert in agriculture who advises farmers. 

reaper

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

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

  • A machine used to harvest crops. 

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