[Autumn]

Is it possible for a menu to appear if you mouse over or double click on a stat in your character window to tell you exactly what the stat does (Defense = physical damage reduction, critical evade) As it might help out players understand exactly what the stat does.

[Neus]

They're labels, so this wouldn't be possible without changing the character screen. I plan to do so at a later time but not soon. In the mean time, refer people who ask to the wiki, which has descriptions of all the stats and what they do in detail.