favourable vs mischanceful

favourable

adj
  • Auspicious or lucky. 

  • Pleasing, encouraging or approving. 

  • Useful or helpful. 

  • Convenient or at a suitable time; opportune. 

noun
  • A favourable person 

mischanceful

adj
  • unlucky 

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