accession vs concession

accession

noun
  • Complicity, concurrence or assent in some action. 

  • A mode of acquiring property, by which the owner of a corporeal substance which receives an addition by growth, or by labor, has a right to the part or thing added, or the improvement (provided the thing is not changed into a different species). 

  • A coming to; the act of acceding and becoming joined. 

  • The act of coming to or reaching a throne, an office, or dignity. 

  • The invasion, approach, or commencement of a disease; a fit or paroxysm. 

  • Access; admittance. 

  • A group of plants of the same species collected at a single location, often held in genebanks. 

  • Agreement. 

  • The act by which one power becomes party to engagements already in force between other powers. 

  • Increase by something added; that which is added; augmentation from without. 

verb
  • To make a record of (additions to a collection). 

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 accession and concession occurred in a corpus of books? (source: Google Ngram Viewer )