cartography vs physiography

cartography

noun
  • The creation of charts and maps based on the layout of a territory's geography. 

  • An illustrative discussion of a topic. 

physiography

noun
  • The subfield of geography that studies physical patterns and processes of the Earth. It aims to understand the forces that produce and change rocks, oceans, weather, and global flora and fauna patterns. 

  • The descriptive part of a natural science as distinguished from the explanatory or theoretical part. 

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