run-in vs shoot-out

run-in

adj
  • (not comparable) Having been run in before or behind previous text. 

  • (sometimes comparable) Having been run in to seat the parts. 

noun
  • The end-phase of a competition. 

  • An encounter; a scrape or brush, especially one involving trouble or difficulty. 

shoot-out

How often have the words run-in and shoot-out occurred in a corpus of books? (source: Google Ngram Viewer )