come off vs fall out

come off

verb
  • To escape or get off (lightly, etc.); to come out of a situation without significant harm. 

  • To occur; to take place. 

  • To have some success; to succeed. 

  • To become detached. 

  • To appear; to seem; to project a certain quality. 

fall out

verb
  • To come out of something by falling. 

  • To leave one's place in the current formation of ranks in order to take one's place in a new formation. 

  • To leave one's current location to report for duty at a new location. 

  • To pass out. 

  • To cease to be on friendly terms. 

noun
  • Synonym of falling out (“rift following a disagreement or quarrel”) 

How often have the words come off and fall out occurred in a corpus of books? (source: Google Ngram Viewer )