Jinshui vs Jurchen

Jinshui

name
  • A district of Zhengzhou, Henan, China. 

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. 

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