passage of arms vs skirmishes

passage of arms

noun
  • A chivalric feat of arms involving the forcing of a passage protected by a knight or a group of knights. 

  • Any feat of arms, especially when used to display the prowess of the participants. 

  • An argument or quarrel. 

skirmishes

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