word | | Terrain |
| costa | Ecuador | coastal plain (costa), inter-Andean central highlands (sierra), and flat to rolling eastern jungle (oriente) |
| costa | Peru | western coastal plain (costa), high and rugged Andes in center (sierra), eastern lowland jungle of Amazon Basin (selva) |
| counterclockwise | Atlantic Ocean | ... October to June; clockwise warm-water gyre (broad, circular system of currents) in the northern Atlantic, counterclockwise warm-water gyre in the southern Atlantic; the ocean floor is dominated by the Mid ... |
| counterclockwise | Indian Ocean | surface dominated by counterclockwise gyre (broad, circular system of currents) in the southern Indian Ocean; unique reversal of surface currents in the northern Indian Ocean; low atmospheric pressure over southwest Asia from ... |
| counterclockwise | Pacific Ocean | ... clockwise, warm-water gyre (broad circular system of currents) and in the southern Pacific by a counterclockwise, cool-water gyre; in the northern Pacific, sea ice forms in the Bering Sea and ... |
| course | Uzbekistan | mostly flat-to-rolling sandy desert with dunes; broad, flat intensely irrigated river valleys along course of Amu Darya, Syr Darya (Sirdaryo), and Zarafshon; Fergana Valley in east surrounded by mountainous Tajikistan ... |
| covered | Arctic Ocean | central surface covered by a perennial drifting polar icepack that, on average, is about 3 meters thick, although pressure ridges may be three times that thickness; clockwise drift pattern in the Beaufort ... |
| covered | Atlantic Ocean | surface usually covered with sea ice in Labrador Sea, Denmark Strait, and coastal portions of the Baltic Sea from October to June; clockwise warm-water gyre (broad, circular system of currents) in ... |
| covered | Gaza Strip | flat to rolling, sand- and dune-covered coastal plain |
| covered | Heard Island and McDonald Islands | Heard Island - 80% ice-covered, bleak and mountainous, dominated by a large massif (Big Ben) and an active volcano (Mawson Peak); McDonald Islands - small and rocky |
| covered | Jan Mayen | volcanic island, partly covered by glaciers |
| covered | Macedonia | mountainous territory covered with deep basins and valleys; three large lakes, each divided by a frontier line; country bisected by the Vardar River |
| covered | Mali | mostly flat to rolling northern plains covered by sand; savanna in south, rugged hills in northeast |
| covered | Qatar | mostly flat and barren desert covered with loose sand and gravel |
| covered | Saint Helena | ... the Atlantic Mid-Ocean Ridge Saint Helena: rugged, volcanic; small scattered plateaus and plains Ascension: surface covered by lava flows and cinder cones of 44 dormant volcanoes; ground rises to the east ... |
| covered | South Georgia and the South Sandwich Islands | ... rising steeply from the sea, are rugged and mountainous; South Georgia is largely barren and has steep, glacier-covered mountains; the South Sandwich Islands are of volcanic origin with some active volcanoes |
| covered | Svalbard | wild, rugged mountains; much of high land ice covered; west coast clear of ice about one-half of the year; fjords along west and north coasts |
| covers | Greenland | flat to gradually sloping icecap covers all but a narrow, mountainous, barren, rocky coast |
| crater | Wake Island | atoll of three low coral islands, Peale, Wake, and Wilkes, built up on an underwater volcano; central lagoon is former crater, islands are part of the rim |
| Crimean | Ukraine | most of Ukraine consists of fertile plains (steppes) and plateaus, mountains being found only in the west (the Carpathians), and in the Crimean Peninsula in the extreme south |
| Crozet | French Southern and Antarctic Lands | ... of a volcano, rocky with steep cliffs on the eastern side; has active thermal springs Iles Crozet: a large archipelago formed from the Crozet Plateau is divided into two groups of islands ... |
| cubic | Southern Ocean | ... in length) moves perpetually eastward; it is the world's largest ocean current, transporting 130 million cubic meters of water per second - 100 times the flow of all the world's rivers |
| Cunha | Saint Helena | ... lava flows and cinder cones of 44 dormant volcanoes; ground rises to the east Tristan da Cunha: sheer cliffs line the coastline of the nearly circular island; the flanks of the central ... |