What is the basic functional difference between the Proximal Tubule and the Loop of Henle in a nephron

From what I read, they both re-absorb water and electrolytes from the pre-urine.

Proximal tubule can actively transport both water and ions. This is the location where most of the exchange takes place.
Loop of Henle, however, is more specialized. The ascending Loop of Henle can exchange water but not ions with the pre-urine. The descending Loop of Henle can exchange ions (not water) with the pre-urine.

Unicorns I think