word | | Terrain |
| flat | Cambodia | mostly low, flat plains; mountains in southwest and north |
| flat | Central African Republic | vast, flat to rolling, monotonous plateau; scattered hills in northeast and southwest |
| flat | Cocos (Keeling) Islands | flat, low-lying coral atolls |
| flat | Colombia | flat coastal lowlands, central highlands, high Andes Mountains, eastern lowland plains |
| flat | Cote d'Ivoire | mostly flat to undulating plains; mountains in northwest |
| flat | Croatia | geographically diverse; flat plains along Hungarian border, low mountains and highlands near Adriatic coastline and islands |
| flat | Cuba | mostly flat to rolling plains, with rugged hills and mountains in the southeast |
| flat | Denmark | low and flat to gently rolling plains |
| flat | Ecuador | coastal plain (costa), inter-Andean central highlands (sierra), and flat to rolling eastern jungle (oriente) |
| flat | Eritrea | ... by extension of Ethiopian north-south trending highlands, descending on the east to a coastal desert plain, on the northwest to hilly terrain and on the southwest to flat-to-rolling plains |
| flat | Estonia | marshy, lowlands; flat in the north, hilly in the south |
| flat | European Union | fairly flat along the Baltic and Atlantic coast; mountainous in the central and southern areas |
| flat | Finland | mostly low, flat to rolling plains interspersed with lakes and low hills |
| flat | France | metropolitan France: mostly flat plains or gently rolling hills in north and west; remainder is mountainous, especially Pyrenees in south, Alps in east French Guiana: low-lying coastal plains rising to hills ... |