失禮 和 失陪 的差別在哪裡？如果不好說明，請提供一些例句。

【失禮】
It is when someone is being rude or impolite.
e.g., 你不可以直接叫老師的名字，這樣很「失禮」!
(You can't just call the teacher's name directly, it's rude!)

【失陪】
It is when someone has to leave first during a meal or meeting with other people, and it's a relatively formal way to say goodbye.
e.g., 我等一下還有點事情，所以我先「失陪」了，不好意思!
(I've go something to do later, so I have to leave now, sorry!)