disharmonious vs nonconcordant

disharmonious

adj
  • Not harmonious; lacking harmony. 

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 disharmonious and nonconcordant occurred in a corpus of books? (source: Google Ngram Viewer )