Subtraction
Part of speech: noun
Definition: (uncountable) The process of subtracting a number from another. (countable) A calculation involving subtracting. The removal of something.
Deduction
Part of speech: noun
Definition: that which is deducted; that which is subtracted or removeda sum that can be removed from tax calculations; something that is written offa conclusion; that which is deduced, concluded or figured outthe ability or skill to deduce or figure out; the power of reasona. 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.
Example sentence: Congress had the opportunity to extend tax relief to working families without increasing the deficit. Instead, we were handed a bill that favors the wealthy and eliminates deductions that benefit the middle class.