abatement vs deduction

abatement

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

  • 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 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. 

deduction

noun
  • That which is deducted; that which is subtracted or removed 

  • A conclusion; that which is deduced, concluded or figured out 

  • A process of reasoning that moves from the general to the specific, in which a conclusion follows necessarily from the premises presented, so that the conclusion cannot be false if the premises are true. 

  • The ability or skill to deduce or figure out; the power of reason 

  • A sum that can be removed from tax calculations; something that is written off 

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