retinue vs valet-de-chambre

retinue

noun
  • A group of servants or attendants, especially of someone considered important. 

  • A group of warriors or nobles accompanying a king or other leader; comitatus. 

valet-de-chambre

noun
  • The personal servant of a monarch. 

  • A valet. 

How often have the words retinue and valet-de-chambre occurred in a corpus of books? (source: Google Ngram Viewer )