legislation vs pronunciamento

legislation

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

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

pronunciamento

noun
  • A manifesto or formal public declaration, originally political; a proclamation. 

  • In Mexico and Latin America, an uprising or insurrection. 

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