Please help me！ What's the difference betwwen might and could? Thank you !

[Harry12345]

What's the difference between might and could?

For example

It might be Lucy's. It could be Lucy's.

Thank you!

 

[Raymott]

What's the difference between might and could?

For example

It might be Lucy's. It could be Lucy's.

Thank you!

In this case, they mean the same. It's possible that it belongs to Lucy.