dead-end vs disappointment

dead-end

noun
  • A position that offers no hope of progress. 

  • A road with no exit. 

adj
  • Going nowhere; blocked. 

verb
  • To come to a dead-end. 

disappointment

noun
  • An example or the act of disappointing: a circumstance in which a positive expectation is not achieved. 

  • The feeling or state of being disappointed: a feeling of sadness or frustration when something is not as good as one hoped or expected, or when something bad unexpectedly happens. 

  • Something or someone that disappoints: that which causes disappointment. 

How often have the words dead-end and disappointment occurred in a corpus of books? (source: Google Ngram Viewer )