Jurchen vs Xicheng

Jurchen

name
  • An extinct Tungusic language (code jur), related to Manchu. 

noun
  • A member of a medieval and early modern Tungusic people, progenitors of the Manchus. 

Xicheng

name
  • a subdistrict in Jingzhou, Jingzhou, Hubei, China 

  • A district in downtown Beijing, China, comprising the sections immediately west of the Forbidden City. 

  • a subdistrict in Zengdu, Suizhou, Hubei, China 

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