clockwise vs widdershins

clockwise

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

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

widdershins

adv
  • anticlockwise, counter-clockwise 

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