unfavourable vs unlucky

unfavourable

adj
  • Not auspicious; ill-boding. 

  • Of wind or weather: causing delay or obstacles; not conducive to travel or work; inclement. 

  • Serving to hinder or oppose; adverse, disadvantageous, inconducive, unsuitable. 

  • Of a belief, state of mind, etc.: not favourable; disapproving. 

unlucky

adj
  • Inauspicious. 

  • Having ill luck. 

  • Bringing ill luck. 

  • Unfortunate, marked by misfortune. 

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