cupbearer vs lady-in-waiting

cupbearer

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

lady-in-waiting

noun
  • A lady, often a noblewoman, in the household of a queen, princess, or other woman of higher rank who attends her as a personal assistant, generally a role considered an honour. 

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