reboot vs relaunch

reboot

verb
  • To start afresh. 

  • To execute a computer's boot process, effectively resetting the computer and causing the operating system to reload, possibly after a system failure. 

  • Restart; to return to a an initial configuration or state. 

noun
  • A fresh start. 

  • An instance of rebooting. 

  • The restarting of a series' storyline without discarding previous continuity. 

  • The restarting of a series' storyline, discarding all previous continuity. 

relaunch

verb
  • To launch again. 

noun
  • The act or fact of launching again. 

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