应该是differ但如果比difference 还长的话，就differentiate（区别、区分1.differencen. 差别、不同之处difference可作可数名词或不可数名词，复数形式：differencesdifference between A and B A和B之间的差别There’s a big difference between juice and wine.果汁和酒之间有很大的差别。

Children need to know the difference between right and wrong.孩子们需要知道对与错之间的差别。There’s not much difference between the two computers.这两台电脑之间没有大的差别。There are a number of differences in the way boys and girls learn.男生和女生学习的方式有很多不同之处。

2.拓展：difference若要表示数量、数额之间的差别，则通常是单数形式、或作不可数用There’s little difference in price between the two bags.这两个书包之间价格没有差别。There is a 2-year age difference between the two girls.这两个女孩之间有2岁的年龄差距）