legislation vs ratification

legislation

noun
  • The act of legislating; preparation and enactment of laws. 

  • Law which has been enacted by legislature or other governing body 

ratification

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

  • A formal declaration of agreement to a treaty etc. 

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