delete vs invalidate

delete

verb
  • To defeat or dominate. 

  • To kill or murder. 

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

noun
  • A remainder of a music or video release. 

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

  • A deletion. 

invalidate

verb
  • To render invalid; discredit. 

  • To make invalid. Especially applied to contract law. 

  • To make or declare (an argument, statement, or theory) unsound or erroneous; disprove. 

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