What's the difference between "run" and "run away"?
To "run" simply means to move at a speed faster than a walk, never having both or all the feet on the ground at the same time. There is no implied situation or nuance. It relies on the rest of the sentence or conversation to give context. However "run away" means you put distance between yourself and an unpleasant thing or undesirable situation. It has the implication that you will not be coming back. The phrase by itself carries nuance. Ex: Run or we will miss the bus. Ex: I'm going to run away from home.