farmer vs harvestman

farmer

noun
  • A person who works the land and/or who keeps livestock, especially on a farm. 

  • The lord of the field, or one who farms the lot and cope of the crown. 

  • One who takes taxes, customs, excise, or other duties, to collect for a certain rate per cent. 

  • regular person; someone who did not receive a prestigious scholarship 

harvestman

noun
  • A field-worker who works to gather in the harvest. 

  • An order of terrestrial, non-venomous arachnids with often very long legs: Opiliones. 

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