请问astound和shock的区别

请问astound和shock的区别 -
astound：to make someone very surprised or shocked [= astonish]:例：We were astounded to read your letter.我们看了你的信大吃一惊。shock：to make someone feel very surprised and upset, and unable to believe what has happened: （惊奇的难以置信）例：The hatred in her voice shocked希望你能满意。
可怕，恐怖，吓人，害怕的，震惊，吓了一小跳，有点怕，大吃一惊，大为惊讶（大于前者），惊喜。感受一下，另附一参考资料：surprise, amaze, astonish, astound, startle, stun 这些动词均含“使惊愕，使惊讶，使惊奇”之意。~~~``他们之间有什么区别呢？surprise →普通用词，多指因未预料或等我继续说。