discordant vs earpiercing

discordant

adj
  • Not in harmony or accord. 

  • Of opposite sign. 

  • Harsh or dissonant-sounding. 

  • Of a differing type of rock cutting across a formation. 

  • Serodiscordant. 

earpiercing

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