cordon, borders, entrances, walls, confines, checkpoints, firewalls, cordon sanitaire, boundaries, fences, barricades, barbed wire, periphery, mortaring, fireguard, guardhouses, fortifications, radiuses, parameters, revetments, berms, mesh, entryways, edges, shatterproof glass, security, breezeways, entrenchments, contours, shrubbery, frontiers, blacktops, gates, baselines, zones, palisades, curtilage, woodpiles, encircling, cartesian coordinates, headlands, stovepipes, encampments, inside, fortresses, protocols, wadis, framework, patrolling, firebreak, walkways, doorways, hilltops, bollards, anastomosing, exclosure, limits, landward, surroundings, stockades, enclosures, guards, vestibules, anthills, inviolate, ramadas, buffers, windbreak, trellises, bases, shoreline, strongrooms, watchtower, sentries, spaces, tents, endpoint, mantling, keyway, dunes, panopticon, clearings, harborage, radiolocation, enclaves, laager, burrows, maginot line, centerlines, egresses, playgrounds, footpaths, dikes, treeline, polyhedrons, hardstand, courtyards, obstructions, shelterbelt, garrisons, quadrants, fortress, perimeter, constituencies, ambit, boundary, central, publics, constituency, contexts, locales, collectivities, defences, demarcations, dimensions

superpose