concord vs conflict

concord

verb
  • To agree; to act together 

noun
  • Agreement of words with one another, in gender, number, person or case. 

  • A state of agreement; harmony; union. 

  • An agreeable combination of tones simultaneously heard; a consonant chord; consonance; harmony. 

  • A variety of sweet American grape, with large dark blue (almost black) grapes in compact clusters; a Concord grape. 

conflict

verb
  • To be at odds (with); to disagree or be incompatible 

  • To overlap (with), as in a schedule. 

noun
  • A clash or disagreement, often violent, between two or more opposing groups or individuals. 

  • An incompatibility, as of two things that cannot be simultaneously fulfilled. 

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