coping vs rectrix

coping

noun
  • Clipping the beak or talons of a bird. 

  • The process of managing taxing circumstances, expending effort to solve personal and interpersonal problems, and seeking to master, minimize, reduce or tolerate stress or conflict. 

  • The top layer of a brick wall, especially one that slopes in order to throw off water. 

rectrix

noun
  • A flight feather on the tails of birds, used for directional control. 

  • A governess; a rectoress. 

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