guerrilla warfare vs paramilitary

guerrilla warfare

noun
  • Combat using groups of irregular, light, mobile troops within areas occupied by an enemy force, usually through hit-and-run tactics. 

paramilitary

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

  • A member of a paramilitary group. 

adj
  • relating to a paramilitary 

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