nonconcordant vs strident

nonconcordant

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

  • not preserving the sign; of opposite sign or zero 

strident

adj
  • Loud; shrill, piercing, high-pitched; rough-sounding 

  • Grating or obnoxious 

  • Vigorous; making strides 

noun
  • One of a class of s-like fricatives produced by an airstream directed at the upper teeth. 

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