dinger vs warning bell

dinger

noun
  • The suspended clapper of a bell. 

  • A condom. 

  • An unregistered car. 

  • Something outstanding or exceptional, a humdinger. 

  • A home run. 

  • One who rings a bell. 

  • A catapult, a shanghai. 

  • A bell or chime. 

  • The penis. 

  • The buttocks, the anus. 

warning bell

noun
  • A bell rung to warn people of a danger. 

  • A problematic or alarming aspect. 

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