problem与question的区别

problem是难题的意思，而question则是问题的意思，区别可以从以下例子看出：

Don't worry about the problem you are faced, he can fix it easily, I don't have any question about his ability. 不要担心你面临的难题，他可以轻松解决，我对他的能力没有任何疑问。