scam vs subterfuge

scam

noun
  • A fraudulent deal. 

  • Something that is promoted using scams. 

verb
  • To defraud or embezzle. 

subterfuge

noun
  • Deception; misrepresentation of the true nature of an activity. 

  • An indirect or deceptive device or stratagem; a blind. Refers especially to war and diplomatics. 

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