advice vs recorded delivery

advice

noun
  • In commercial language, information communicated by letter; used chiefly in reference to drafts or bills of exchange 

  • A communication providing information, such as how an uncertain area of law might apply to possible future actions 

  • Counseling to perform a specific legal act. 

  • In language about financial transactions executed by formal documents, an advisory document. 

  • An opinion offered to guide behavior in an effort to be helpful. 

  • Counseling to perform a specific illegal act. 

  • In aspect-oriented programming, the code whose execution is triggered when a join point is reached. 

recorded delivery

noun
  • A form of postal delivery where the sender receives a receipt of postage, and the receiver must sign upon receiving it 

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