courtier vs train-bearer

courtier

noun
  • A person in attendance at a royal court. 

  • Any of various nymphalid butterflies of the Asian genus Sephisa. 

  • A person who flatters in order to seek favour. 

train-bearer

noun
  • An attendant who supports the train of a dignitary. 

How often have the words courtier and train-bearer occurred in a corpus of books? (source: Google Ngram Viewer )