4WD vs AWD

["Grant Lenahan" <glenahan@notes.cc.bellcore.com>]

 >>Qlist mail traffic in the last few days has seen AWD and 4WD
>>used interchangably.  A few years ago one of the magazines, R&T or CandD,
>>suggested a functional separation of the terms to reduce confusion and foster
>>enlightment.

The general difference in usage is for full-time systems vs part-time systems,
not ground clearance.  A good example is Jeep's use (until recently) of AWD
for the full-time system.  They offer (offered?) both on the same vehicle.

Grant