concur 和 agree的區別是什麽？

根據我的英英字典，concur的意思是to agree with someone or have the same opinion.

所以在意見統壹這方面concur 和 agree沒區別。

但agree的意思更廣泛，它還有答應的意思

例句

He suggest we go shopping this Friday and I agree at once.

而concur卻只有意見壹致的意思