affray vs armed struggle

affray

noun
  • The fighting of two or more persons, in a public place, to the terror of others. 

  • The act of suddenly disturbing anyone; an assault or attack. 

  • A tumultuous assault or quarrel. 

armed struggle

noun
  • An irregular political conflict waged by an armed rebel group attempting to overthrow the prevailing regime or otherwise win political rights. 

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