defeat和beat的区别？

beat和defeat属一组同义词，它们的宾语必须是人或一个集体，如a team, a class, an school, an army。defeat尤指在战场上打败敌人；beat是游戏、比赛的专门用词。二者常可换。 eg:
We beat their team by 10 points. 我们赢了他们队十分。
In the end their army was defeat/beaten. 最后他们的部队被击（打）败。

beat
[bi:t]
n.
敲打, 拍子, 巡逻区域
v.
打, 打败

beat
[bi:t]
vt.
(beat; beaten [5bi:tn])
打; 敲; 连打; 连击
击败; 胜过; 优于
【音】打(拍子)
走出; 漫步前进; 挤入; 挤出
[俗]难倒; 使迷惑; 使吃惊;
锤薄; 敲平
欺骗, 瞒
搅拌
鼓(翼)
遍查; 在...里搜寻
beat sb. black and blue
把某人打得青一块紫一块
beat the enemy
打败敌人
That problem has beaten me.
那个问题把我难住了。
The bird beat its wings.
鸟扑打翅膀。
I'll beat some sense into him.
我将设法使他放明白些。

beat
[bi:t]
vi.
敲; 连打; (风)吹, (雨)打, (日)晒
搏动; 跳动
在树林中搜索
(鼓)咚咚地响
[俗]得胜
(蛋等)打出泡沫
【航海】逆风斜驶
My pulse beats normally.
我脉搏正常。
The rain was beating agains