delete vs thicken

delete

noun
  • A remainder of a music or video release. 

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

  • A deletion. 

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. 

thicken

verb
  • To become thicker (in the sense of wider). 

  • To become thicker (in the sense of more viscous). 

  • To make thicker (in the sense of more viscous). 

  • To make thicker (in the sense of wider). 

  • To make more frequent. 

  • To strengthen; to confirm. 

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