gimmick vs warning

gimmick

noun
  • A clever ploy or strategy. 

  • A trick or device used to attain some end. 

  • A night out with one's friends. 

  • A gimmick capacitor. 

verb
  • To rig or set up with a trick or device. 

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 gimmick and warning occurred in a corpus of books? (source: Google Ngram Viewer )