tragedy vs train wreck

tragedy

noun
  • A disastrous event, especially one involving great loss of life or injury. 

  • A drama or similar work, in which the main character is brought to ruin or otherwise suffers the extreme consequences of some tragic flaw or weakness of character. 

  • The genre of such works, and the art of producing them. 

train wreck

noun
  • A disaster, especially one which is large in scale and readily seen by public observers. 

  • The aftermath of a train crash. 

  • Someone (especially a woman) who is unbalanced and considered a mess, a disaster, one who is suffering personal ruin. 

verb
  • To ruin utterly and catastrophically, to cause to end in disaster. 

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