blank out vs delete

blank out

verb
  • To erase from one's memory. 

  • To set even; to neutralise. 

  • To erase (something), leaving a blank in its place. 

  • To become blank. 

  • To temporarily lose memory. 

delete

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

  • To kill or murder. 

  • To defeat or dominate. 

noun
  • A remainder of a music or video release. 

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

  • A deletion. 

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