different between appraisal vs deduction

English

From appraise +? -al.

appraisal (countable and uncountable, plural appraisals)

From Middle French déduction, from Latin deductio

deduction (countable and uncountable, plural deductions)

That which is deducted; that which is subtracted or removed
A sum that can be removed from tax calculations; something that is written off
You might want to donate the old junk and just take the deduction.
(logic) 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.
Antonym: induction
A conclusion; that which is deduced, concluded or figured out
He arrived at the deduction that the butler didn't do it.
The ability or skill to deduce or figure out; the power of reason
Through his powers of deduction, he realized that the plan would never work.

(that which is subtracted or removed): extract, reduction; See also Thesaurus:decrement

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