In Buddhist cosmology, the realm of the asuras (demigods), characterized by constant conflict and jealousy. One of the six realms of rebirth (六道).
See also: 六道 · 阿修羅 (あしゅら)
In Buddhism, the Asura realm is considered a world of endless conflict.
六道 is the collective term for the six realms of rebirth, while 阿修羅道 specifically refers to the Asura realm within that system.
阿修羅 refers to the asura beings themselves, whereas 阿修羅道 denotes the realm where they dwell.
From 阿修羅 (asura, from Sanskrit 'asura') + 道 (path, realm). The term is a direct Buddhist loan translation.