briefing vs priming

briefing

noun
  • A presentation of information or instruction; the meeting at which it is presented. 

  • A short and concise summary of a situation. 

priming

noun
  • The implicit memory effect in which exposure to a stimulus influences response to a subsequent stimulus. 

  • The powder or other combustible used to communicate fire to a charge of gunpowder, as in a firearm. 

  • The carrying over of water, with the steam, from the boiler, as into the cylinder. 

  • A substance used as a primer. 

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