award 和reward 有什么区别?详细一点

award:

v
1.To give esp.as the result of an official decision （尤指官方决定）给予，授予，判给：例〔+obj(i)+obj(d)]
例：she's been awarded a scholarship to study at Oxford.
她获得了去年牛津大学念书的奖学金。
n
something, esp. a prize or money, given as the result of an official decision 奖，奖赏，奖金，奖品（损害赔偿等之）裁定额。
例：an award of $5000 to those injured in the explosion。
裁定给在爆炸（事故）中受伤的人五千澳元赔偿费。
vi/vt
审查后授予，授予，奖于，裁定

award通常指由审核员等慎重审核的结果所给与的奖赏

reward:
n
1.(something gained or received as )a return for doing something good or valuable. 报酬，报答，奖赏，报偿
例As a reward for passing her exams, she got a new bike from her parents.
作为对她考试及格的奖赏，父亲给她买了一辆新的脚踏车。
I don't expect anything in reward' I did it because I enjoyed it.
我不指望得到什么报答，我做这件事只是因为我喜欢干。
they will expect some reward after working so hard.
他们这样卖力的工作，总会得到报酬的。

2.an amount of money given to someone who helps the polic or brings back lost