luck vs warning

luck

noun
  • The results of a random number generator. 

  • A superstitious feeling that brings fortune or success. 

  • Success. 

  • Something that happens to someone by chance, a chance occurrence, especially a favourable one. 

verb
  • To find something through good fortune; used with into, on, onto or upon. 

warning

noun
  • Something spoken or written that is intended to warn. 

  • The action of the verb warn; an instance of warning someone. 

intj
  • Used to warn of danger in signs and notices. 

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