protestation vs remonstrance

protestation

noun
  • a formal solemn objection or other declaration 

  • A declaration in common-law pleading, by which the party interposes an oblique allegation or denial of some fact, protesting that it does or does not exist, and at the same time avoiding a direct affirmation or denial. 

remonstrance

noun
  • A remonstration; disapproval; a formal, usually written, objection or protest. 

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