refresh vs retard

refresh

noun
  • The periodic energizing required to maintain the contents of computer memory, the display luminance of a computer screen, etc. 

  • The update of a display (in a web browser or similar software) to show the latest version of the data. 

  • The process of modernizing something. 

verb
  • To perform the periodic energizing required to maintain the contents of computer memory, the display luminance of a computer screen, etc. 

  • To become fresh again; to be revitalized. 

  • To renew or revitalize. 

  • To cause (a web browser or similar software) to refresh its display. 

  • To reload (a document, especially a webpage) and show any new changes. 

retard

noun
  • Retardation; delay. 

  • A slowing down of the tempo; a ritardando. 

  • A person or being who is extremely stupid or slow to learn. 

verb
  • To put off; to postpone. 

  • To decelerate; to slow down. 

  • To keep delaying; to continue to hinder; to prevent from progressing. 

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