There are many different types of robots, and RPA robots act as virtual assistants. On the other hand, digital workers operate more like humans. Nonetheless, RPA robots are highly productive, multi-tasking, and have a large capacity to take on a wide variety of rules-based workflows.
RPA robots can automate processes for any department and any industry as long as they are repetitive and rules-based processes. If you add AI, then RPA may start to act and think like a human as well.