Let $s$ be the following statement.
If it is raining, then the ground is wet.

Which is the converse of $s$?
? If it is not raining, then the ground is not wet. If it is raining, then the ground is not wet. If the ground is wet, then it is raining. If the ground is not wet, then it is raining. If the ground is not wet, then it is not raining.

Which is the contrapositive of $s$?
? If it is not raining, then the ground is not wet. If it is raining, then the ground is not wet. If the ground is wet, then it is raining. If the ground is not wet, then it is raining. If the ground is not wet, then it is not raining.