demon

Compared meaning: an evil spirit (noun).

比较义项：魔鬼，恶灵（名词）。

• devil

  Often refers to THE Devil (Satan) or a singularly powerful, named evil spirit; stronger, more dramatic register; common in fixed phrases and religious storytelling.

  常指“那个魔鬼”（撒旦）或某个单一的、极具威力的恶灵；语气更重、更戏剧化；常出现在固定短语和宗教故事中。

  According to legend, the devil himself rules over the underworld.

  传说中，魔鬼本人统治着地狱。

• demon 本词

  Usually one of many lesser evil spirits, often summoned, exorcised, or fought in groups; common in fantasy, horror and possession contexts, less tied to a single supreme figure.

  通常指众多较低级恶灵中的一个，常被召唤、驱逐或成群对抗；多见于奇幻、恐怖及附身语境，不特指某个至高的单一形象。

  The priest performed a ritual to drive the demon out of her body.

  神父举行仪式，把恶魔从她体内驱逐出去。

Devil and demon both mean an evil spirit. Devil often refers to Satan himself, or one powerful, named evil being, with a dramatic tone in religious storytelling. Demon means one of many lesser evil spirits, summoned or fought in groups, common in fantasy and horror.

这两个词在“邪恶的灵体”这个意义上很接近，都可以指恐怖故事或宗教语境中的恶灵，但 devil 语气更重、更具体，常指撒旦本身或撒旦一类的至高恶灵，而 demon 泛指级别较低、数量较多的恶灵或附身的邪灵。