palmer vs traveler

palmer

noun
  • A pilgrim who had been to the Holy Land and who brought back a palm branch in signification; a wandering religious votary. 

  • One who palms or cheats, as at cards or dice. 

  • A ferule used to punish schoolboys by striking their palms. 

traveler

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