THESAURUS
coastal
bordering, borderline, boundary, bounding, determinant, determinative, determining, extreme, fringing, frontier, limbic, liminal, limit, limiting, littoral, marginal, rimming, riparial, riparian, riparious, riverside, seaside, shore, shoreside, shoreward, skirting, terminal, threshold
ROGET THESAURUS
coastal
Land
N
land, earth, ground, dry land, terra firma, continent, mainland, peninsula, chersonese, delta, tongue of land, neck of land, isthmus, oasis, promontory, highland, coast, shore, scar, strand, beach, playa, bank, lea, seaboard, seaside, seabank, seacoast, seabeach, ironbound coast, loom of the land, derelict, innings, alluvium, alluvion, ancon, riverbank, river bank, levee, soil, glebe, clay, loam, marl, cledge, chalk, gravel, mold, subsoil, clod, clot, rock, crag, acres, real estate, landsman, earthy, continental, midland,
coastal, littoral, riparian, alluvial, terrene, landed, predial, territorial, geophilous, ripicolous, ashore, on shore, on land.