Answer: The explanation gives the <em>reason</em> as the cause of some fact or claim, while the argument provides <em>support</em> in the form of evidence or example in order to substantiate the claim.
Explanation: An explanation is any statement, reason or justification that makes a certain belief, action or position clear. An explanation can also mean a scientific explanation or explanation in the learning process.
The argument is a reason or set of reasons, settings, which support a particular idea or theory. The argument may also mean the exchange of ideas and attitudes within a discussion when opposing opinions, i.e. when a claim is supported by an example that serves as an argument.