What is the difference between Win + D (Show Desktop) and Win + M (Minimize All) keyboard shortcuts in Windows

As you might be knowing, there are two shortcut keys in Windows to minimize all opened windows. The older one is Win + M, which is there since Windows 95 and the newer one is Win + D which was added in Windows 98/IE4 with Windows Desktop Update. While both can be used to show the Desktop, there is a difference between them. Let's see what exactly.