A flat surface things are set out on, and the ordered arrangement set out there. First a plank cut for inscribing.
Latin tabula (a plank, a board, a flat writing surface), via Old French table; the ordered arrangement set out on a flat surface is named for the plank it was once literally written or drawn upon.
A flat surface things are set out on, and the ordered arrangement laid out there. Both descend from the plank first cut for inscribing.