acknowledgment vs concession

acknowledgment

noun
  • The act of acknowledging 

  • The act of a person admitting a child as their own. 

  • A response (ACK) sent by a receiver to indicate successful receipt of a transmission (See Wikipedia article on transmission). 

  • A recognition as genuine or valid; an avowing or admission in legal form. 

  • A reward or other expression or token of gratitude. 

  • The act of recognizing in a particular character or relationship; recognition of existence, authority, truth, or genuineness. 

  • A formal statement or document recognizing the fulfillment or execution of a legal requirement or procedure. 

  • An expression of gratitude for a benefit or an obligation. 

  • A message from the addressee informing the originator that the originator's communication has been received and understood. 

concession

noun
  • The act of conceding. 

  • A franchise: a business operated as a concession (see above). 

  • A concession road: a narrow road between tracts of farmland, especially in Ontario, from their origin during the granting of concessions (see above). 

  • A right to operate a quasi-independent business within another's premises, as with concession stands. 

  • A preferential tax rate. 

  • A discounted price offered to certain classes of people, such as students or the elderly. 

  • An admission of defeat following an election. 

  • A territory—usually an enclave in a major port—yielded to the administration of a foreign power. 

  • A person eligible for a concession price (see above). 

  • A compromise: a partial yielding to demands or requests. 

  • A portion of a township, especially equal lots once granted to settlers in Canada. 

  • A right to operate a quasi-independent franchise of a larger company. 

  • The premises granted to a business as a concession (see below) 

  • An item sold within a concession (see above) or from a concessions stand. 

  • An admission of the validity of an opponent's point in order to build an argument upon it or to move on to another of greater importance; an instance of this. 

  • A right to use land or an offshore area for a specific purpose, such as oil exploration. 

  • A gift freely given or act freely made as a token of respect or to curry favor. 

  • Any admission of the validity or rightness of a point; an instance of this. 

verb
  • To grant or approve by means of a concession agreement. 

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