Is there any difference between executable binary files between distributions?

Question

As all Linux distributions use the same kernel, is there any difference between their executable binary files?

If yes, what are the main differences? Or does that mean w

Answer 1

Old Unixes also used COFF format. You may still find executables from times of yore in this format. Linux still has support for it (I don't know if it's compiled in current distros, though).