Related by context. Frequent words. (Click for all words.) 68 coral atolls 65 islands 58 archipelagos 57 rocky outcrops 57 volcanoes 57 atolls 57 volcanic crater 57 coral islands 56 landmasses 55 seamount 54 archipelago 54 atoll 54 uninhabited island 53 basalts 53 island 53 Indonesian archipelago 53 highlands 52 equatorial 52 subduction zone 52 extinct volcano 52 active volcanoes 51 lithosphere 51 hydrothermal vents 51 geologically active 51 subduction zones 51 Moheli 51 Sandwich Islands 51 uninhabited islands 51 tectonic plates collide 51 lava flows 50 islets 50 landmass 50 Hawaiian islands 50 caldera 50 volcanic rock 49 cays 49 uninhabited 49 volcanic 49 coral 49 Weddell Sea 49 seamounts 49 massif 49 Marquesas 49 landforms 48 Late Cretaceous 48 Pacific Ocean 48 reefs 48 Indian Ocean 48 dormant volcano 48 biodiversity hotspots 48 Galapagos Islands 48 Hawaiian Islands 48 Pitcairn Island 48 marine sediments 47 rocky outcrop 47 giant tortoises 47 Aleutian chain 47 coral reefs 47 Great Rift Valley 47 volcanic rocks 47 sedimentary basins 47 largely uninhabited 47 inhabited islands 46 intertidal 46 Sulu Sea 46 Andes mountains 46 seabed 46 Amazon basin 46 Islands 46 Archaea 46 Niihau 46 volcanism 46 geologically 46 Kuiper belt 46 Antarctic Peninsula 45 sedimentary 45 Kuril Islands 45 coral species 45 Ellesmere Island 45 tectonic plate 45 Chatham Islands 45 tropical 45 Moluccas 45 volcanos 45 Northwestern Hawaiian Islands 45 mountain ranges 45 jagged peaks 45 taxa 45 anemone 45 coral reef 45 Socotra 45 limestone cliffs 45 subduction 45 icecap 45 Tuvalu 45 reef 45 outcroppings 45 volcanic activity 45 southernmost island 45 baleen whales 45 Tristan da Cunha