discord vs fighting

discord

noun
  • Tension or strife resulting from a lack of agreement; dissension. 

  • Any harsh noise, or confused mingling of sounds. 

  • An inharmonious combination of simultaneously sounded tones; a dissonance. 

  • Lack of concord, agreement or harmony. 

verb
  • To untie things which are connected by a cord. 

fighting

noun
  • The act or process of contending; violence or conflict. 

  • A fight or battle; an occasion on which people fight 

adj
  • Engaged in war or other conflict. 

  • Apt to provoke a fight. 

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