affray vs tug of war

affray

noun
  • A tumultuous assault or quarrel. 

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

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

tug of war

noun
  • A dispute between two parties, particularly an entrenched, back-and-forth dispute. 

  • A game or competition in which two teams pull or tug on opposite ends of a rope trying to force the other team over the line which initially marked the middle between the two teams. 

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