break down vs fade out

break down

verb
  • To cease to function. (others) 

  • To demolish, to pull down. (intentionally) 

  • To divide into parts to give more details, to provide a more indepth analysis of. 

  • To (cause to) decay, to decompose. 

  • To stop functioning. (machine, computer, vehicle) 

  • To fail, especially socially or for political reasons. 

  • To give in, relent, concede, or surrender. 

  • To render or to become weak and ineffective. 

  • To digest. 

  • To render or to become unstable due to stress, to collapse physically or mentally. 

  • To collapse, physically or in structure. (unexpectedly) 

fade out

verb
  • To slowly disappear. 

  • To fade from a cut to black in a movie. 

  • To decrease in volume, such as at the end of a song, until there is only silence. 

noun
  • A type of transition used in film, usually at the end of a scene, involving a fade to black from the cut. 

How often have the words break down and fade out occurred in a corpus of books? (source: Google Ngram Viewer )