churl vs fellah

churl

noun
  • A free peasant (as opposed to a serf) of the lowest rank, below an earl and a thane; a freeman; also (more generally), a person without royal or noble status; a commoner. 

  • A rough, surly, ill-bred person; a boor. 

  • A bondman or serf. 

  • A freedman, ranked below a thane but above a thrall. 

fellah

noun
  • A peasant, farmer or agricultural laborer in the Middle East and North Africa. 

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