excavate 和 exhume 的差別在哪裡？如果不好說明，請提供一些例句。

"Exhume" is only used for dead bodies that were once buried, being dug up.
"Excavate" can be used for any old objects.

For example:
"New evidence makes us think your mother's death might not have been an accident. We'll need to exhume the body and run more tests."

"This is the remains of an ancient villiage. People lived here over 10,000 years ago. Scientists have excavated many old tools and pottery that these people used."