rating vs slap on the wrist

rating

noun
  • An enlisted seaman not a commissioned officer or warrant officer. 

  • An evaluation of status, especially of financial status. 

  • A number, letter, or other mark that refers to the ability of something. 

  • A position on a scale. 

  • A quantitative measure of the audience of a television program. 

  • A seaman in a warship. 

slap on the wrist

noun
  • Used other than figuratively or idiomatically: see slap, wrist. 

  • An overly mild punishment; a reprimand. 

verb
  • To punish in an overly mild and largely symbolic manner. 

  • Used other than figuratively or idiomatically: see slap, wrist. 

How often have the words rating and slap on the wrist occurred in a corpus of books? (source: Google Ngram Viewer )