backset vs wrecking

backset

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

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

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

wrecking

noun
  • The act by which something is wrecked. 

  • The taking of valuables from a shipwreck close to the shore. 

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