arid vs dry as a bone

arid

adj
  • Very dry. 

  • Devoid of value. 

  • Describing a very dry climate. Typically defined as less than 25 cm or 10 inches of rainfall annually. 

dry as a bone

adj
  • completely dry; totally dry 

How often have the words arid and dry as a bone occurred in a corpus of books? (source: Google Ngram Viewer )