a discussion in which reasons are advanced for and against some proposition or proposal
The argument over foreign aid goes on and on.
source: WordNet 3.0
a course of reasoning aimed at demonstrating a truth or falsehood; the methodical process of logical reasoning
I can't follow your line of reasoning.
source: WordNet 3.0
The act of forming reasons, making inductions, drawing conclusions, and applying them to the case in discussion; the operation of inferring propositions, not known or admitted as true, from facts or principles known, admitted, or proved to be true.
