bai vs servitor

bai

noun
  • A people of the Yunnan province of China. 

  • A marshy meadow in sub-Saharan Africa. 

servitor

noun
  • One who performs the duties of a servant. 

  • One who serves in an army; a soldier. 

  • An undergraduate who performed menial duties in exchange for financial support from his college, particularly at Oxford University. 

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