quicksilver vs turbid

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. 

turbid

adj
  • Unclear; confused; obscure. 

  • Having the lees or sediment disturbed; not clear. 

  • Smoky or misty. 

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