outcry vs protestation

outcry

noun
  • A loud cry or uproar. 

  • A strong protest. 

verb
  • To cry out. 

  • To cry louder than. 

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. 

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