请问hand in 和hand over有区别吗?能麻烦举几个例句吗?

感觉hand overwa要正式些，它们都是有交上的意思，hand over还有移交的意思。hand your homework in把家庭作业交上来。they were handed over to the government她们被移交给了*。

hand in：
交上；提交；呈送
Hand in your workbooks, please.
请把你们的练习本交上来
hand over
交出；移交
The case was hand over to Charles Elwell for investigation.
这个案件转给了查尔斯·埃尔韦尔去调查.