The term 'spiral-horned African antelope' refers to two species of antelope found in Africa: the ELAND (5 letters) and the NYALA (5 letters). The ELAND is the largest antelope in the world, with males weighing up to 1, 000 kg. It has a long, spiral-shaped horns and a distinctive white stripe running down its back. The NYALA is a smaller antelope, with males weighing up to 180 kg. It has a reddish-brown coat and short, straight horns. Both species are found in savannahs and woodlands in southern and eastern Africa.