Ding vs Tan

Ding

name
  • A county of Republican China in Hebei Province. 

  • A surname. 

  • A prefecture of imperial China within present-day Hebei under the Northern Wei, Sui, and Tang dynasties, with its seat at Dingzhou. 

Tan

name
  • A Chinese surname from Mandarin. 

  • A Chinese surname from Hokkien. 

  • A surname from Vietnamese. 

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