delusive vs quicksilver

delusive

adj
  • Delusional. 

  • Producing delusions. 

  • Inappropriate to reality; forming part of a delusion. 

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