A coup d'état is a sudden and illegal seizure of power from a government, often involving military forces or organized groups. In contrast, a revolution typically refers to a broader and more profound socio-political transformation, aiming to change the system fundamentally and redistribute power among the populace. While coups may aim to replace a leader or regime without substantial structural changes, revolutions often arise from widespread social discontent, seeking comprehensive reforms and greater participatory governance. The distinction between them lies in the scope and intent behind the power change.