Let's say you have a Type and you want to find it by the simple name, not the entire namespace. So for string, for example, you want to use Boolean, not System.Boolean. And if you try in your code typeof(bool).Name you get "Boolean" and for typeof(bool).FullName you get "System.Boolean".
However, for generic types, that is not the case. Try typeof(int?). For FullName you get "System.Nullable`1[[System.Int32, System.Private.CoreLib, Version=18.104.22.168, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]]", but for Name you get "Nullable`1".
So the "name" of the type is just that, the name. In case of generics, the name of the type is the same as the name of its generic definition. I find this a bit disingenuous, because in the name you get encoded the fact that is a generic type or not and how many generic type attributes it has, but you don't get the attributes themselves.
I admit that if I had to make a choice, I couldn't have come up with one to satisfy all demands, either. Just a heads up that Type.Name should probably not be used anywhere.