Dingxian vs Shang

Dingxian

name
  • Synonym of Dingzhou, a town in Hebei, China. 

  • Synonym of Ding County in Hebei, China. 

Shang

name
  • an ancient dynasty in China 

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