inlet		flat-topped mountain with steep sides
peninsula		triangle-shaped area of land at the mouth of a river
plain		the level of the surface of an ocean or a sea
basin		body of shallow water
tributary		dry land with few plants
volcano		large waterfall
mountain pass		top of a mountain
source of river		area of flat land along a sea or ocean
fall line		body of salt water larger than a sea
riverbank		narrow strip of land connecting two larger areas of land
mesa		deep, narrow valley with steep sides
sea level		lowland with moist soil and tall grasses
canyon		body of water with land on all sides
oasis		deepest part of a body of water
delta		highest kind of land
floodplain		low land between hills or mountains
valley		large ice mass that moves slowly down a mountain or across land
timberline		steep drop from a high place to a lower place in a stream or river
channel		land that rises above the land around it
bay		high, steep face of rock or earth
coast		flat land that is near the edges of a river and is formed by silt deposited by floods
plateau		bowl-shaped area of land surrounded by higher land
waterfall		body of salt water smaller than an ocean
peak		point of land that extends into water
dune		area of water and fertile land in a desert
sea		stream or river that flows into a larger stream or river
coastal plain		narrow channel of water connecting two larger bodies of water
reef		high, steep face of rock or earth
cliff		ridge of sand, rock, or coral that lies at or near the surface of a sea or ocean
mountain range		area of flat or gently rolling low land
bluff		opening in the earth, often raised, through which lava, rock, ashes, and gases are forced out
lagoon		hill of sand piled up by the wind
desert		area along which rivers form waterfalls or rapids as the rivers drop to lower land
lake		area of high, mostly flat land
cape		land that is almost completely surrounded by water
cataract		any area of water extending into the land from a larger body of water
marsh		place where a river begins
strait		an inlet of the sea or some other body of water, usually smaller than a gulf
ocean		row of mountains
isthmus		line on a mountain above which it is too cold for trees to grow
mountain		land along a sea or ocean
river		part of a sea or ocean extending into the land, usually larger than a bay
gulf		large stream of water that flows across the land
swamp		land along a river
mouth of river		gap between mountains
savanna		hilly area at the base of a mountain
slope		area of grassland and scattered trees
hill		area of low, wet land with trees
island		place where a river empties into another body of water
foothills		land that has water on all sides
glacier		side of a hill or mountain