meeting of the minds vs ratification

meeting of the minds

noun
  • An agreement, especially one resulting from a gathering in which discussion or negotiation took place. 

ratification

noun
  • A formal declaration of agreement to a treaty etc. 

  • The act or process of ratifying, or the state of being ratified. 

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