cropper vs mower

cropper

noun
  • A person who nurtures and gathers a crop. 

  • A fall, a tumble; a decided failure. 

  • A variety of plant producing a good harvest. 

  • A machine for cropping, as for shearing off bolts or rod iron, or for facing cloth. 

  • A breed of domestic pigeon with large crop. 

mower

noun
  • A person who cuts grass. 

  • A lawnmower, a machine used to cut grass on lawns. 

  • A farm machine used in hay production (sickle mower, finger-bar mower). 

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