freelance vs jackal

freelance

noun
  • Someone who sells their services to clients without a long-term employment contract. 

  • A medieval mercenary. 

verb
  • To produce or sell services as a freelance. 

  • To work as a freelance. 

adj
  • Of, or relating to a freelance; without employment contract. 

jackal

noun
  • A person who behaves in an opportunistic way; especially a base collaborator. 

  • A person who performs menial/routine tasks, a dogsbody. 

  • A player who steals the ball at the tackle. 

  • A jack (the playing card). 

  • Any of certain wild canids of the genera Lupulella and Canis, native to the tropical Old World and smaller than a wolf. 

verb
  • To perform menial or routine tasks 

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