energize vs invigorate

energize

verb
  • To invigorate; to make energetic. 

  • To supply with energy, especially electricity; to turn on power to (something). 

invigorate

verb
  • To heighten or intensify. 

  • To impart vigor, strength, or vitality to. 

  • To make lively. 

  • To give life or energy to. 

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