ironic vs quicksilver

ironic

adj
  • Odd or coincidental; strange. 

  • Done in an insincere and mocking manner; satirical. 

  • Acting in a unserious and teasing manner. 

  • Characterized by or constituting (any kind of) irony. 

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 ironic and quicksilver occurred in a corpus of books? (source: Google Ngram Viewer )