Reef		gap between mountains
Savanna		line on a mountain above which it is too cold for trees to grow
Peninsula		body of water with land on all sides
FallLine		area of water and fertile land in a desert
CoastalPlain		land along a sea or ocean
Dune		side of a hill or mountain
Bay		high, steep face of rock or earth
SeaLevel		land along a river
Ocean		hill of sand piled up by the wind
Riverbank		steep drop from a high place to a lower place in a stream or river
Foothills		and that has water on all sides
Inlet		deep, narrow valley with steep sides
Delta		area along which rivers form waterfalls or rapids as the rivers drop to lower land
Cataract		ridge of sand, rock, or coral that lies at or near the surface of a sea or ocean
Valley		deepest part of a body of water
Peak		area of high, mostly flat land
Slope		stream or river that flows into a larger stream or river
Floodplain		highest kind of land
River		narrow channel of water connecting two larger bodies of water
Cliff		an inlet of the sea or some other body of water, usually smaller than a gulf
Gulf		narrow strip of land connecting two larger areas of land
Coast		body of shallow water
Range		triangle-shaped area of land at the mouth of a river
Plateau		land that is almost completely surrounded by water
Cape		hilly area at the base of a mountain
Canyon		point of land that extends into water
Swamp		large waterfall
Sea		opening in the earth, often raised, through which lava, rock, ashes, and gases are forced out
March		area of low, wet land with trees
Channel		high, steep face of rock or earth
Tributary		low land between hills or mountains
Waterfall		area of flat or gently rolling low land
Basin		area of flat land along a sea or ocean.
Desert		flat-topped mountain with steep sides
Island		row of mountains
Oasis		part of a sea or ocean extending into the land, usually larger than a bay
Bluff		large stream of water that flows across the land
Mountain		dry land with few plants
Lake		top of a mountain
Hill		large ice mass that moves slowly down a mountain or across land
Isthmus		the level of the surface of an ocean or a sea
Volcano		lowland with moist soil and tall grasses
Timberline		any area of water extending into the land from a larger body of water
Pass		area of grassland and scattered trees
Glacier		land that rises above the land around it
Strait		body of salt water smaller than an ocean
Lagoon		body of salt water larger than a sea
Mesa		flat land that is near the edges of a river and is formed by silt deposited by floods
Plain		bowl-shaped area of land surrounded by higher land