clashing vs surd

clashing

adj
  • conflicting, contrasting, or contrary; inconsonant, incompatible, or irreconcilable 

  • mismatched, inharmonious, discordant or dissonant, not fitting well together (especially in regards to aesthetics, colors, clothing, or sounds) 

  • adverse or antagonistic; disagreeing or opposing 

  • Producing a clash or series of clashes. 

noun
  • A clash; the sound or action of clashing; violent collision. 

surd

adj
  • unvoiced; voiceless 

  • Involving surds, or irrational numbers; not capable of being expressed in rational numbers. 

noun
  • An irrational number, especially one expressed using the √ symbol. 

  • A voiceless consonant. 

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