What is the difference between "comes up" and "comes over" if we replace "comes running up" with "comes running over"?
Mrs. Walters: See you tomorrow night. [DJ’s best friend https://sony.fandom.com/wiki/Chowder, wearing a Halloween mask and holding a basketball, comes running up behind the car yelling and bumps right into it, causing DJ’s parents to jolt]
Chowder: [putting his hand on the rear window] I'm okay!
Monster House
Generally speaking, "comes up" focuses on approaching something, and "comes over" focuses on traversing intervening ground. In some cases the difference may not be very important. In this particular case, in combination with "behind", the wording "running up behind the car" suggests to me that he is running roughly in the same direction as the car is travelling/pointing, while "running over behind the car", which seems less usual, would suggest that he is running at an angle (maybe roughly at right angles) to the direction in which the car is travelling/pointing.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
Generally speaking, "comes up" focuses on approaching something, and "comes over" focuses on traversing intervening ground. In some cases the difference may not be very important. In this particular case, in combination with "behind", the wording "running up behind the car" suggests to me that he is running roughly in the same direction as the car is travelling/pointing, while