胃壁[iheki] stomach lining
外壁[gaiheki] outer wall
隔壁[kakuheki] barrier wall
岸壁[ganpeki] wharf
胸壁[kyouheki] chest walls

合壁[gappeki] neighbor with just a wall between
磁壁[jiheki] magnetic domain
障壁[shouheki] enclosing wall
城壁[jouheki] rampart
絶壁[zeppeki] precipice

垣牆[enshou] hedge
牆壁[shouheki] wall

兄弟牆に鬩ぐ[keiteikakinisemegu] sibling rivalry
築牆[tsuikaki] mud wall with a roof