majordomo vs valet-de-chambre

majordomo

noun
  • The head servant or official in a royal Spanish or Italian household; later, any head servant in a wealthy household in a foreign country; a leading servant or butler. 

  • Any overseer, organizer, person in command. 

  • A manager of a hacienda, ranch or estate. 

valet-de-chambre

noun
  • The personal servant of a monarch. 

  • A valet. 

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