fade out vs go bad

fade out

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

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

  • To slowly disappear. 

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

go bad

verb
  • Of foods and commodities, to spoil, rot, or otherwise become unusable due to age or storage conditions. 

  • Of a person or entity, to cease to be reputable and instead become delinquent, criminal, immoral, corrupt or poorly behaved. 

  • Of a geographic area, to become unsafe. 

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