I don't see what the contention is. My lease agreement "prevents" me from putting nails in the walls to hang pictures. I "prevents" me because the fines are not

I don't see what the contention is. My lease agreement "prevents" me from putting nails in the walls to hang pictures. I "prevents" me because the fines are not something I'd like to pay, it would be a "disincentive" if the fine was only 10$. What is your definition of "prevent", like physically stop from doing it?