dissonant vs nonconcordant

dissonant

adj
  • Exhibiting dissonance; not agreeing or harmonizing. 

nonconcordant

adj
  • Discordant; inharmonious; disconsonant; not in keeping with; not agreeable with; disagreeing. 

  • not preserving the sign; of opposite sign or zero 

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