请问beat与defeat用法与使用场合的区别

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 against the windows.
雨点正敲打着窗户。
We heard the drums beating.
我们听到鼓咚咚地响。
The sailboat was beating along the coast.
帆船沿岸边逆风而驶。
beat
[bi:t]
n.
接连敲打; 频击
搏动; 跳动
拍子; 节拍
常走的路; 经常巡逻