A stage, a raised platform — the built place a thing is performed from, from ard, "high." Irish, ardán. The floor is raised so the telling can be seen; what is made on it is not the stage's, and the stage is what makes it visible.
Irish ardan (a stage, a raised platform), from ard (high); the floor raised so a telling can be seen by all present.
The raised floor a telling is performed from, distinct from what is made on it.