Middle Kingdom vs Song

Middle Kingdom

name
  • China. 

  • Egypt from the time of its reunification under Mentuhotep II in the 11th Dynasty (ending the First Intermediate Period) to its disintegration during the 13th Dynasty and the beginning of the Second Intermediate Period. 

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 Middle Kingdom and Song occurred in a corpus of books? (source: Google Ngram Viewer )