backset vs plight

backset

noun
  • A check; a relapse; a discouragement; a setback. 

  • Whatever is thrown back in its course, such as water. 

verb
  • To plow again in the fall; said of prairie land broken up in the spring. 

plight

noun
  • A dire or unfortunate situation. 

  • Blame; culpability; fault; wrong-doing; sin; crime. 

  • One's office; duty; charge. 

  • Responsibility for ensuing consequences; risk; danger; peril. 

  • An instance of danger or peril; a dangerous moment or situation. 

verb
  • To promise (oneself) to someone, or to do something. 

  • Specifically, to pledge (one's troth etc.) as part of a marriage ceremony. 

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