Note: don't put reasoning inside a box. Argument maps display the structure of reasoning; don't hide that structure inside a box.
A claim is a proposition put forward by somebody as true. A proposition is an idea which is either true or false.
A reason is a piece of evidence in support of some claim. Technically, a reason is a set of claims working together to provide evidence that another claim is true.
A declarative sentence is one which states an idea which can be true or false.
A conclusion is a claim for which some evidence is presented, whether for or against. See also contention.
An objection is a piece of evidence against some claim. Technically, an objection is set of claims working together to provide evidence that another claim is false.
A simple argument is just a contention with a single piece of reason for it, or a contention with a single objection to it.
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