Let me clarify first. For example, on a device like a laptop/PC, etc., if there is an open port, then this device is accessing some service on the internet depending on the port number. I know this, but what makes me overwhelmed is that when you find open ports on a router, what do they mean? Like, the router is not a laptop; it is not accessing websites or communicating with other devices. Then what does it do with the open ports?

Ik this sounds noob but I am really confused