paramilitary vs quisling

paramilitary

noun
  • A member of a paramilitary group. 

  • A group of civilians trained and organized in a military fashion, but which do not represent the formal forces of a sovereign power. 

adj
  • relating to a paramilitary 

quisling

noun
  • A traitor who collaborates with the enemy. 

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