invigorate vs overextend

invigorate

verb
  • To impart vigor, strength, or vitality to. 

  • To heighten or intensify. 

  • To make lively. 

  • To give life or energy to. 

overextend

verb
  • To push a pawn too far, so that it becomes vulnerable to the opponent's attacks. 

  • To expand or extend to an excessive degree, especially to do so beyond a safe limit. 

  • To apply (a term) to too many referents, by overextension. 

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