bai vs hireling

bai

noun
  • A people of the Yunnan province of China. 

  • A marshy meadow in sub-Saharan Africa. 

hireling

noun
  • Someone who does a job purely for money, rather than out of interest in the work itself. 

  • A horse for hire. 

  • An employee who is hired, often to perform unpleasant tasks with little independence. 

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