retaining wall, swale, culvert, revetment, roadway, fence, drainage ditch, riprap, chainlink fence, embankment, dike, walkway, seawall, snowshed, roadbed, swales, levee, guardrail, dune, gravel, driveway, frontage road, streambed, bulkhead, subgrade, flood plain, creek, spillway, pilings, coulee, arroyo, overpass, creek bed, groyne, lagoon, breakwater, causeway, cartway, caliche, marsh, floodplain, wetlands, pond, shrubbery, riverbed, shoreline, cofferdam, sluiceway, wall, topsoil, bleachers, firebreak, subbase, sand dune, headrace, pavement, batture, oxbow, windbreak, forebay, drainage, hillside, macadam, earthwork, sinkhole, ditches, sidewalk, falsework, riverbank, easement, barricade, flowage, hardpan, parkway, hummock, slope, landward, lake, sandbars, overcrossing, sand, sandbags, abutment, subdivision, gabion, greenbelt, millrace, rock outcrop, dam, pedestrian bridge, treeline, medians, dirt, trench, hogback, blacktop, seaward, sandy, underdrain, marram grass, gravel pit, caissons, rampart, ledge, buttress, pier, ramp, reef, terrace, ditch, parapet, mound, embankments, mesa, aisle, berms, jetty, bluff, cancellous, crescent, etched, gorge, gully, rim, sectioned, undercut, accessible, anodic, anvil, apennine, arcade, atheromatous, barrier, bay, bottom