What is the terminology to discuss the difference between these two beds and tailgates?

Here are two Toyota Hilux pickups. As far as I can tell, both bed types were available.

One has smooth sides and a center handle on the tailgate. The other has tie-downs along the top, and double tailgate latches.

I would classify the lower box as "antique". I've not seen a Japanese pickup with a box lie that since the 70's.

Nice if you want to actually work with the truck, I must say.

I like the second bed.. if I wanted a Work truck, that is what I would want. Lots of tiedowns that don't get covered or in the way, and a very secure tailgate

Yes, I suspect they sell the second type to areas that actually use the truck from something other then going to the mall and back. I know I would prefer it.

Don't know how you would describe it though. Outback style? Utility style? Savanna style?

I would describe it as utilitarian

A deck = smooth side.

J deck = "j" hooks on side

This scenario was common on Japanese pickups in the US in the 70's.

To avoid the "chicken tax", Japanese manufacturers would send chassis-cabs over as "incomplete vehicles" and add the beds at a shop near the port.

Back in those days, we'd call the beds with the side latches and hooks "Japanese beds" and the smooth-sided beds with center-latch tailgate "American beds".

Standard bed.

Utility bed.

My Datsun 620 had hooks along the sides of the bed, it was Awesome