While pushing is moving stuff away from your body, pulling does the opposite.
One of the reasons pulling gets missed from a lot of people’s workouts is that the muscles aren’t mirror muscles, meaning that you don’t see the results as much as with bulging biceps.
Yet pulling is just as important in functional movements, as you probably notice when you go to shut the tailgate on your SUV (assuming that you don’t just push the close button).
As with pushing, pulling can be horizontal or vertical.