carter vs harvestman

carter

noun
  • A fish, the whiff or Marysole. 

  • A person who transports a load on a cart that is drawn by a beast of burden. 

harvestman

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

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

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