strengthen enhance reinforce这几个词有什么区别，具体语境怎么用？

strengthen enhance reinforce这几个词有什么区别，具体语境怎么用？

enforce 加强（某论点﹑ 信念等或使法律规则等实行）: Have you any statistics that would enforce your argument? 你有没有支持自己论点的统计数字?

reinforce以添加材料等加固（某物）: reinforce the sleeves of a jumper, eg with elbow patches 在套头毛衣肘部加补钉 ， reinforce a wall, bridge, dyke, etc 把墙﹑ 桥﹑ 堤坝等加固.
strengthen 增强，加强，巩固；strengthen unity加强团结；
This exercise will strengthen your upper body
strengthen the relations between the two countries
多与considerably, enormously, greatly, immeasurably, significantly, substantially 搭配。
常用于词组an attempt/effort to strengthen sth
Exercising every day strengthens the heart.每天锻炼可以提高心脏的功能。
Competition, they believe, strengthens the national character rather than corrupt it. 人们认为竞争加强了民族性而不是破坏了它。

reinforce vt. 加固; 强化; 增援; vi. 求援; 得到增援; 给予更多的支持;例句
A stronger European Parliament would, they fear, only reinforce the power of the larger countries. 他们担心一个更加强大的欧洲议会只会增强大国的力量。追问thanks