department和major有什么区别

department是部门的意思，而major则是主要的意思，区别可以从以下例子看出：

There are many departments in our company, but the research department is major one for our company, you should manage it good. 我们公司有很多部门，但研究部是我们公司的主要部门，你应该管理好。

departure和department区别

departure是出发的意思，而department则是部门的意思，一个动词，区别可以从以下例子看出：

Before your departure, you can go to the department store to get some gift for your wife, it is duty free，good deal . 出发前，可以去百货公司给老婆买些礼物，可以免税的，很便宜。