promise vs wonder

promise

verb
  • To give grounds for expectation, especially of something good. 

  • To commit to (some action or outcome), or to assure (a person) of such commitment; to make an oath or vow. 

noun
  • A transaction between two persons whereby the first person undertakes in the future to render some service or gift to the second person or devotes something valuable now and here to his use. 

  • A placeholder object representing the eventual result of an asynchronous operation. 

  • Reason to expect improvement or success; potential. 

  • an oath or affirmation; a vow 

wonder

verb
  • To be affected with surprise or admiration; to be struck with astonishment; to be amazed; to marvel; often followed by at. 

  • To ponder; to feel doubt and curiosity; to query in the mind. 

noun
  • Something that causes amazement or awe; a marvel. 

  • A kind of donut; a cruller. 

  • Someone very talented at something, a genius. 

  • A mental pondering, a thought. 

  • The sense or emotion which can be inspired by something curious or unknown; surprise; astonishment, often with awe or reverence. 

  • Something astonishing and seemingly inexplicable. 

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