amend vs backset

amend

noun
  • An act of righting a wrong; compensation. 

verb
  • To make better; improve. 

  • To make a formal alteration (in legislation, a report, etc.) by adding, deleting, or rephrasing. 

  • To become better. 

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. 

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