Clarifying Scrum Roles: Balancing Responsibilities Between Scrum Master and Scrum Coordinator

I’ve noticed that many of the Scrum Coordinator’s responsibilities seem to align with what a Scrum Master would typically handle. Right now, our Scrum Coordinator (who is also one of our developers) is overburdened, while the Scrum Master sometimes feels a bit underutilized. I’d like a clearer breakdown of both roles—how they differ, where they overlap, and whether there are opportunities to shift responsibilities to the Scrum Master to reduce developer’s workload.