What Bullet said. I never know the correct terms, and if this doesn't get resolved for you today, I have a diagram of VehiCROSS parts at home that I can post up so that we all know what we are talking about. Anyway, what I will call the half shafts are the same for both sides. Those are the little spinny axle parts that you can actually see when you look under the VX. they include the inner and outer CV joint, the shaft between the two, and a splined shaft that fits into the hub on the front wheel.
What I call the axles are the parts that are inside the axle housing and cannot be seen when you look under the VX (well, you can see the housing). They include the outer race for the inner CV joint (what everyone calls the green cups) which is part of a shaft with splined ends that mate into the center differential. Those axles are very different between the driver and passenger side.
Actually, I just remembered that I have a picture of the complete drivers side axle, from the center differential out to the hub:
On the right hand side of the image you can see the axle that fits into the axle housing. It has splines on the far right end and the "green cup" is on the left hand side of the axle (it has numbers written on it). This is the driver side axle and it is much longer than the passenger side due to the center differential being off center of the VX. The half shaft starts at the "green cup" and continues all the way to the left of the image. It includes the two CV joints that are covered by the CV boots which look like bellows. These half shafts are the same length for the driver and passenger side.
A while back I needed to replace my driver side axle (the one in the axle housing) because my driver side inner CV boot had torn and I didn't notice it for a while. With the CV open to the elements all kinds of dirt and grime got in there and scarred and pitted up the "green cup". I couldn't find a replacement axle so I had the axle taken out and sent off to a machine shop. The shop filled in the scar's and pits with metal (basically welded them up) and then re-machined everything back into spec. That was three or four years ago and I haven't had a problem with the axle since.
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong, it usually turns out to be impossible to get at or repair."
-Douglas Adams, Mostly Harmless