两者中文意思意思都一样，都是， 消失；消灭。但在具体使用中有所不同。evanish为不及物动词，相当于disappear ，而vanish为不及物动词，相当于disappear quickly and suddenly 。

例如，

Global warming heats up the Arctic twice as fast as the rest of the world, meaning Alaska's tundra stands to vanish if temperatures continue to rise.