addition vs procuration

addition

noun
  • The act of adding anything. 

  • The arithmetic operation of adding. 

  • A dot at the right side of a note as an indication that its sound is to be lengthened one half. 

  • Anything that is added. 

  • A title annexed to a person's name to identify him or her more precisely. 

  • Something added to a coat of arms, as a mark of honour. 

procuration

noun
  • The act of procuring; procurement. 

  • The management of another's affairs. 

  • A sum of money formerly paid to the bishop or archdeacon, now to the ecclesiastical commissioners, by an incumbent, as a commutation for entertainment at the time of visitation; called also proxy. 

  • The instrument by which a person is empowered to transact the affairs of another; a proxy. 

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