clientage vs retinue

clientage

noun
  • clients collectively; clientele 

  • the condition of being a client 

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. 

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