What is the difference of a pro and normal in Resident Evil 4

In Normal mode, the enemies don't take too long to kill and you don't get hurt as much. In Pro mode, the enemies are stronger and capable of killing you. This time, you are getting hurt more, you will definetly run out of healing items pretty fast so definetly be careful. Plus, if you think about it. Normal is normal mode. Not to easy but not to hard. As for pro mode, that's basically your hard mode.