briefing vs rundown

briefing

noun
  • A short and concise summary of a situation. 

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

rundown

noun
  • A rough outline of a topic or situation. 

  • A Caribbean stew of meat or fish (typically mackerel) with reduced coconut milk, yam, tomato, onion and seasonings. 

  • A reduction, e.g. of an activity, or in the size of something, such as a fleet. 

  • A summary of the horses to be raced on a particular day, with their weights, jockeys, odds, etc. 

  • A defensive play in which the runner is caught between two fielders, who steadily converge to tag the runner out. 

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