jackal vs pin-up

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 

pin-up

noun
  • Figurehead, person who represents an idea, cause etc. 

  • A photograph, printed in a magazine or other publication, of a sexually attractive person (often nude or provocatively dressed), and intended to be removed and pinned up on a wall. 

  • The person so depicted. 

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