虽然这两个单词的意义很接近,但翻成英语还是有区别的.
幻觉：illusion
错觉：delusion
The difference here is that illusion is an imagined vision but delusion means you are fooling yourself about what you see/or what is happening.
两者的区别是,illusion 是一种想象的场景（幻觉）,而 delusion 意味着你被所看到的/或所发生的事欺骗了.