Cells do not use the energy from oxidation reactions as soon as it is released. Instead, they convert it into small, energy-rich molecules such as ATP and nicotinamide adenine dinucleotide (NADH), which can be used throughout the cell to power metabolism and construct new cellular components.
Another difference is that deer antlers are branched and antelope horns are not. Antelopes belong to family Bovidae (as do sheep, goat and cattle), while deer belong to family Cervidae. Both are even-toed ungulates (hoofed animals) and ruminant mammals.
Be sure to see Goats & Sheep, Oryx, and Nile Lechwe to read about other Antilopinae subfamily members. All antelope have horns; in some species they are only found on the males, whereas in others, such as gazelles, both males and females have them.