revolver vs thirty-eight

revolver

noun
  • A handgun with a revolving chamber enabling several shots to be fired without reloading. 

  • Any (personal) firearm with such a mechanism. 

  • Synonym of revolving line of credit 

thirty-eight

num
  • The cardinal number immediately following thirty-seven and preceding thirty-nine. 

How often have the words revolver and thirty-eight occurred in a corpus of books? (source: Google Ngram Viewer )