carpenter vs rolly polly

carpenter

noun
  • A woodlouse. 

  • A carpenter bee. 

  • A two-wheeled carriage. 

  • A senior rating in ships responsible for all the woodwork onboard; in the days of sail, a warrant officer responsible for the hull, masts, spars and boats of a ship, and whose responsibility was to sound the well to see if the ship was making water. 

  • A person skilled at carpentry, the trade of cutting and joining timber in order to construct buildings or other structures. 

verb
  • To work as a carpenter, cutting and joining timber. 

rolly polly

noun
  • A woodlouse. 

  • A forward roll or a backwards roll. 

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