murky vs vaporific

murky

adj
  • Hard to see through, as a fog or mist. 

  • Dark, dim, gloomy. 

  • Cloudy, indistinct, obscure. 

  • Dishonest, shady. 

vaporific

adj
  • Producing vapour; tending to pass, or to cause to pass, into vapor. 

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