buoy vs patronage

buoy

verb
  • To support or maintain at a high level. 

  • To maintain or enhance enthusiasm or confidence; to lift the spirits of. 

  • To keep afloat or aloft; used with up. 

  • To mark with a buoy. 

noun
  • A life-buoy; a life preserver. 

  • A float moored in water to mark a location, warn of danger, indicate a navigational channel or for other purposes 

patronage

verb
  • To support by being a patron of. 

  • To be a regular customer or client of; to patronize 

noun
  • The act or state of being a customer of some business. 

  • Customers collectively; clientele; business. 

  • A communication that indicates lack of respect by patronizing the recipient; condescension; disdain. 

  • The right of nomination to political office. 

  • Granting favours or giving contracts or making appointments to office in return for political support. 

  • The right of presentation to church or ecclesiastical benefice; advowson. 

  • Guardianship, as of a saint; tutelary care. 

  • The act of providing approval and support; backing; championship. 

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