approval vs protest

approval

noun
  • An expression of favorable acceptance and encouragement; a compliment that also condones. 

  • Something mailed by a seller to a collector to match their stated interests; the collector can approve of or return the item. 

  • An expression granting permission; an indication of agreement with a proposal; an acknowledgement that a person, thing, or event meets requirements. 

protest

noun
  • A collective gesture of disapproval; a demonstration. 

  • The noting by a notary public of an unpaid or unaccepted bill. 

  • A written declaration, usually by the master of a ship, stating the circumstances attending loss or damage of ship or cargo, etc. 

  • A formal objection, especially one by a group. 

verb
  • to make a solemn written declaration, in due form, on behalf of the holder, against all parties liable for any loss or damage to be sustained by non-acceptance or non-payment of (a bill or note). This should be made by a notary public, whose seal it is the usual practice to affix. 

  • To affirm (something). 

  • To object to. 

  • To make a strong objection. 

  • To call as a witness in affirming or denying, or to prove an affirmation; to appeal to. 

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