disheartening vs promising

disheartening

adj
  • Causing a person to lose heart; making despondent or gloomy. 

promising

noun
  • The act of making a promise. 

adj
  • Showing promise, and likely to develop in a desirable fashion. 

  • a promising young apprentice 

  • Encouraging and inspiring confidence. 

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