directness vs subterfuge

directness

noun
  • The state or quality of being direct. 

subterfuge

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

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

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