drudge vs peon

drudge

noun
  • Someone who works for (and may be taken advantage of by) someone else. 

  • A person who works in a low servile job. 

verb
  • To labour in (or as in) a low servile job. 

peon

noun
  • A lowly person; a peasant or serf; a labourer who is obliged to do menial work. 

  • A person of low rank or importance. 

  • A messenger, foot soldier, or native policeman. 

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