armed struggle vs arms

armed struggle

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

arms

noun
  • weaponry, weapons 

  • A visual design composed according to heraldic rules, consisting of a coat of arms normally displayed upon an escutcheon, sometimes accompanied by other elements of an achievement 

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