drudge vs skivvy

drudge

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

noun
  • A person who works in a low servile job. 

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

skivvy

verb
  • To perform menial work; to do chores, like a servant. 

noun
  • A prostitute. 

  • A close-fitting, long-sleeved T-shirt with a rolled collar. 

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