directness vs hedging

directness

noun
  • The state or quality of being direct. 

hedging

noun
  • The act of one who hedges (in various senses). 

  • Any plant used to form a hedge. 

  • The use of intentionally ambiguous or noncommittal statements. 

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