Hurt is to cause physical pain/discomfort, be it from an injury or some stress, or lack of something. Harm can be any kind of damage, usually physical, but also mental, material, any ill effects on something in general.

it is a doubt I have as well and I'm waiting answer your question because it will be very useful for me

Hurt is to cause an injury, or feel the pain. Harm is the physical injury. That's the difference between them. I hope that I managed to answer your question.

it is a doubt I have as well and I'm waiting answer your question because it will be very useful for me