energize vs spark up

energize

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

  • To invigorate; to make energetic. 

spark up

verb
  • To provide electrification. 

  • To initiate (a conversation, debate etc.) 

  • to make more exotic or fun 

  • to rekindle 

  • To light up; light a cigarette or start smoking a pipe, bong, etc. 

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