backset vs delete

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. 

delete

noun
  • A deletion. 

  • A remainder of a music or video release. 

  • The delete character (U+007F or %7F). 

verb
  • To kill or murder. 

  • To defeat or dominate. 

  • To remove, get rid of or erase, especially written or printed material, or data on a computer or other device. 

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