word | | Terrain |
| mountains | Mexico | high, rugged mountains; low coastal plains; high plateaus; desert |
| mountains | Mongolia | vast semidesert and desert plains, grassy steppe, mountains in west and southwest; Gobi Desert in south-central |
| mountains | Montenegro | highly indented coastline with narrow coastal plain backed by rugged high limestone mountains and plateaus |
| mountains | Mozambique | mostly coastal lowlands, uplands in center, high plateaus in northwest, mountains in west |
| mountains | New Caledonia | coastal plains with interior mountains |
| mountains | Nicaragua | extensive Atlantic coastal plains rising to central interior mountains; narrow Pacific coastal plain interrupted by volcanoes |
| mountains | Nigeria | southern lowlands merge into central hills and plateaus; mountains in southeast, plains in north |
| mountains | Norway | glaciated; mostly high plateaus and rugged mountains broken by fertile valleys; small, scattered plains; coastline deeply indented by fjords; arctic tundra in north |
| mountains | Oman | central desert plain, rugged mountains in north and south |
| mountains | Pakistan | flat Indus plain in east; mountains in north and northwest; Balochistan plateau in west |
| mountains | Panama | interior mostly steep, rugged mountains and dissected, upland plains; coastal areas largely plains and rolling hills |
| mountains | Papua New Guinea | mostly mountains with coastal lowlands and rolling foothills |
| mountains | Philippines | mostly mountains with narrow to extensive coastal lowlands |
| mountains | Poland | mostly flat plain; mountains along southern border |
| mountains | Puerto Rico | mostly mountains with coastal plain belt in north; mountains precipitous to sea on west coast; sandy beaches along most coastal areas |
| Mountains | Romania | central Transylvanian Basin is separated from the Plain of Moldavia on the east by the Carpathian Mountains and separated from the Walachian Plain on the south by the Transylvanian Alps |
| mountains | Russia | broad plain with low hills west of Urals; vast coniferous forest and tundra in Siberia; uplands and mountains along southern border regions |
| mountains | Samoa | two main islands (Savaii, Upolu) and several smaller islands and uninhabited islets; narrow coastal plain with volcanic, rocky, rugged mountains in interior |
| mountains | San Marino | rugged mountains |
| mountains | Serbia | extremely varied; to the north, rich fertile plains; to the east, limestone ranges and basins; to the southeast, ancient mountains and hills |
| mountains | Sierra Leone | coastal belt of mangrove swamps, wooded hill country, upland plateau, mountains in east |
| mountains | Slovakia | rugged mountains in the central and northern part and lowlands in the south |
| mountains | Slovenia | a short coastal strip on the Adriatic, an alpine mountain region adjacent to Italy and Austria, mixed mountains and valleys with numerous rivers to the east |
| mountains | Solomon Islands | mostly rugged mountains with some low coral atolls |
| mountains | 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 |
| mountains | Sri Lanka | mostly low, flat to rolling plain; mountains in south-central interior |
| mountains | Sudan | generally flat, featureless plain; mountains in far south, northeast and west; desert dominates the north |