Archipelago

Noun

 * 1) A group of islands.
 * 2) Something scattered around like an archipelago.
 * The Gulag Archipelago

Thesaurus
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