abatement vs accession

abatement

noun
  • The action of a person that abates, or without proper authority enters a residence after the death of the owner and before the heir takes possession. 

  • The reduction of the proceeds of a will, when the debts have not yet been satisfied; the reduction of taxes due. 

  • An amount abated; that which is taken away by way of reduction; deduction; decrease; a rebate or discount allowed; in particular from a tax. 

  • The act of abating, or the state of being abated; a lessening, diminution, or reduction; a moderation; removal or putting an end to; the suppression. 

  • Waste of stuff in preparing to size. 

  • A mark of dishonor on an escutcheon; any figure added to the coat of arms tending to lower the dignity or station of the bearer. 

accession

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

  • 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 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. 

  • Complicity, concurrence or assent in some action. 

  • 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). 

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