leave和departure具体在词义解释上的区别如下：
1、leave 的意思有：vt. ?离开; 遗弃; 忘了带; 交托。vt.& vi. 离去; 出发; 舍弃。n. 准假; 假期; 辞别; 许可。
2、departure ?的意思有：n. 背离; 离开，离去; 起程; 东西距离。
leave的用法
1、He would not be allowed to leave the country?
他可能会被禁止离开该国。
2、He left school with no qualifications?
他没有获得任何学历证书便离开了学校。
3、He'll never leave you. You need have no worry?
他不会离开你的，你不用担心。
4、I left my bags in the car?
我把包放在车里了。
5、You can leave a message on our answering machine?
您可以在我们的答录机上留言。
departure的用法
1、They hoped this would lead to the departure of all foreign forces from the country?
他们希望这将驱使所有外国部队撤离该国。
2、This would inevitably involve his departure from the post of Prime Minister?
这将不可避免地导致他辞去首相一职。
3、Taylor announced another departure from practice in that England will train at Wembley
泰勒再次一改常规地宣布英格兰队将在温布利球场进行训练。
4、The airline has more than 90 scheduled departures from here every day.?
该航空公司每天都有90多架航班从这里起飞。
5、Reihill's departure from the company is thought to follow disagreements with John Reihill Sr, who now controls the company.?
赖希尔从公司的离职被认为是因为与现在掌管公司的老约翰·赖希尔意见不合。