discordant vs quicksilver

discordant

adj
  • Harsh or dissonant-sounding. 

  • Not in harmony or accord. 

  • Of opposite sign. 

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

  • Serodiscordant. 

quicksilver

adj
  • Unpredictable, erratic or fickle; mercurial. 

verb
  • To overlay with quicksilver. 

  • To treat with quicksilver. 

noun
  • The metal mercury. 

  • An amalgam of mercury and tin applied to the backs of mirrors, quicksilvering. 

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