Material Plane

The "normal" world as we would think of it. Physical laws are relatively similar to real life. Exandria is (as of the time of me writing this only having seen up to E78), the only known planet in the material plane.
The material plane was "crafted" by the gods when they separated / exiled the primordial titans from it to form the elemental planes. It was then refined even further when the gods themselves were either exiled or left of their own volition to form / inhabit their own separate planes. It is unclear how the Feywild, Shadowfell, and Astral Sea are accounted for within this explanation of history ^ (which is largely derived from an explanation from Highbearer Vord).