Answer 1

The answer comes from the difference in both.

Interpreting code is slower than running the compiled code because the interpreter must analyze each statement in the program each time it is executed, and then perform the desired action,
whereas the compiled code just performs the action within a fixed context determined by the compilation.

But, in case of debugging, interpreter wins over compiler.
An edit-interpret-debug cycle could be much faster than an edit-compile-run-debug cycle!