dispiriting vs lucky

dispiriting

adj
  • Lowering the morale of; making despondent or depressive; disheartening. 

lucky

noun
  • seven 

adj
  • Favoured by luck; fortunate; having good success or good fortune. 

  • Producing, or resulting in, good fortune 

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