greenstreetgroover, You are correct in that definition, it is just a terminology. What makes it a difference is, if the car has a full or part time system. Here in north America, a vehicle who has all wheels all time connected, is considered a AWD.

Here is one for all of you:
The SF AWD system is mainly a FWD with variable connection to the rear.
In normal condition (no front wheel spin, and no action at the DDU), 100% of torque is to the front. Since the VC is connected to the DDU (who has no action), it is turning in a "locked" condition, and drives the rear wheels as well.
BUT, as the car is already moving (by front wheel action) and with it the rear wheels, there is almost no TORQUE DEMAND at the rear.
The picture changes immediately, if one front wheel start to spin. The VC get activated by the action of the DDU, and more torque is distributed to the rear (up to 40%), till both front wheel have grip again.
This is why the SF is more fuel efficient then others (4X4, 4WD, AWD, etc.)