A Standard Action usually allows you to take some action and move your base speed, either before or after.
Charge is a Special Standard Action, where the move carries some additional limitations.
Firstly, it must be before, not after.
Secondly, it must be in a straight line.
Thirdly, it must be at least 10 feet.
Fourthly, it can be up to twice your base speed, unlike a normal move.
You cannot Charge and move - the Charge includes a move already.
Note that in the SRD, they call Charge a Full-Round Action, rather than a Special Standard Action, but the result is the same.
-Hyp.