Ding vs Song

Ding

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

  • A surname. 

  • A county of Republican China in Hebei Province. 

Song

name
  • A former empire in China, occupying the eastern half of modern China. 

  • A former dynasty in China, reigning from the end of the Five Dynasties and Ten Kingdoms to the beginning of the Yuan. 

  • A surname from Khmer. 

  • A surname from Chinese. 

  • A local government area of Adamawa State, Nigeria. 

  • A river in Papua New Guinea 

  • The era of Chinese history during which the dynasty reigned. 

  • A river in China; any of various minor rivers in China. 

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