commode vs thunder mug

commode

noun
  • A stand for a washbowl and jug. 

  • A toilet. 

  • A kind of woman's headdress, raising the hair and fore part of the cap to a great height. 

  • A chair containing a chamber pot. 

  • A low chest of drawers on short legs. 

thunder mug

How often have the words commode and thunder mug occurred in a corpus of books? (source: Google Ngram Viewer )