Wall comes from Latin vallum meaning ". . . an earthen wall or rampart set with palisades, a row or line of stakes, a wall, a rampart, fortification. . . " while the Latin word murus means a defensive stone wall. English uses the same word to mean an external wall and the internal sides of a room, but this is not universal. Many languages distinguish between the two. In German, some of this distinction can be seen between Wand and Mauer, in Spanish between pared and muro.