If there's two waypoint markers that are named the same, how did the flight control and/or plane software know which one is being referred? Assuming closest, it

If there's two waypoint markers that are named the same, how did the flight control and/or plane software know which one is being referred? Assuming closest, it would have had to special case for it already, no? e.g. if I want to drive to Springfield, it needs to know which one out of 67 I'd like to go to...