illusion,imagination区别

一个是幻觉，一个是想象力
illusion n. 幻觉，错觉；错误
His mind could no longer distinguish between illusion and reality.
他的头脑已不再能分清幻觉和现实。
imagination n. [心理] 想象力；空想；幻想物
She has plenty of imagination.
她的想象力非常丰富。