돌아가다(dol-a-ga-da, dolagada)
To go back to the original place or starting point
When to use
Going to starting point, Moving away from current location, Going back to place left behind
The nuance
Used when the subject goes back to the original place from their current location, emphasizing the action of going back.
돌아오다(dol-a-o-da, dolaoda)
To come back to the original place or starting point
When to use
Coming back to starting point, Returning from a place left, Visiting the place again
The nuance
Used when the subject returns to the original place, emphasizing the action of coming back toward the speaker or the starting point.