cupbearer vs henchman

cupbearer

noun
  • One who ceremonially fills and hands out the cups in which a drink is served. 

henchman

noun
  • A loyal and trusted follower or subordinate. 

  • A person who supports a political figure chiefly out of selfish interests. 

  • An assistant member of a criminal gang. 

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