THESAURUS
archipelago
ait, atoll, bar, cay, continental island, coral head, coral island, coral reef, holm, insularity, island, island group, islandology, isle, islet, key, oceanic island, reef, sandbank, sandbar
ROGET THESAURUS
archipelago
Island
N
island, isle, islet, eyot, ait, holf, reef, atoll, breaker,
archipelago, islander, insular, seagirt, archipelagic, Fluids in Motion.