clockwise vs contraclockwise

clockwise

adv
  • In a curve or twist corresponding to the movement of the hands of a clock. 

adj
  • Moving clockwise; having rotary motion in the manner of a clock. 

contraclockwise

adj
  • counterclockwise 

adv
  • counterclockwise 

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