concord vs discordance

concord

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. 

verb
  • To agree; to act together 

discordance

noun
  • The presence of a specific genetic trait in only one of a set of clones (or identical twins). 

  • Discordance of sounds; dissonance. 

  • A state of being discordant; disagreement, inconsistency. 

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