difference 
英 [ˈdɪfərəns]  美 [ˈdɪfərəns] 
n. 不同，差别，差异；差数，差额；意见分歧；争执

例句：
Look at the difference in size. 

看看大小的差别。

There's not much difference in colour between the two of them. 

这二者之间颜色差别不大。

There's not much difference in age between us. 

我们年龄相差不多。

That is the difference between the two societies. 

那就是这两个社会之间的差异。

There's very little difference between them. 

它们几乎没有什么差别。