lucky vs unlooked for

lucky

adj
  • Producing, or resulting in, good fortune 

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

noun
  • seven 

unlooked for

adj
  • Not expected or anticipated; unforeseen. 

  • Not looked for, not searched for. 

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