double-dealing vs shrouding

double-dealing

adj
  • Cheating, dishonest; treacherous. 

noun
  • deceit or treachery 

shrouding

noun
  • A shroud (annular plate at the periphery of a water wheel, forming side of bucket). 

How often have the words double-dealing and shrouding occurred in a corpus of books? (source: Google Ngram Viewer )