Nouns denoting natural objects (not man-made)

hydrosphere
the watery layer of the earth's surface; includes water vapor
 
seaside
the shore of a sea or ocean regarded as a resort
 
Laptev Sea
part of the Arctic Ocean to the north of Siberia (between the Taimyr Peninsula and the New Siberian Islands) that is icebound most of the year
 
Lascaux
a cave in southwestern France that contains Paleolithic paintings
 
Housatonic River
a river that rises in western Massachusetts and flows south through Connecticut to empty into Long Island Sound
 
honeycomb
a structure of small hexagonal cells constructed from beeswax by bees and used to store honey and larvae
 
jag
a sharp projection on an edge or surface
 
quicksand
a pit filled with loose wet sand into which objects are sucked down
 
plowland
arable land that is worked by plowing and sowing and raising crops
 
cape
a strip of land projecting into a body of water
 
trail
a track or mark left by something that has passed
 
straight chain
an open chain of atoms with no side chains
 
Yukon River
a North American river that flows westward from the Yukon Territory through central Alaska to the Bering Sea
 
land mass
a large continuous extent of land
 
Mackenzie River
a Canadian river; flows into the Beaufort Sea
 
Teton Range
a mountain range in northwest Wyoming; contains the Grand Teton
 
archipelago
a group of many islands in a large body of water
 
Pyxis
a constellation in the southern hemisphere near Puppis and Antlia
 
Dorado
a constellation in the southern hemisphere near Reticulum and Pictor; contains most of the Large Magellanic Cloud
 
beta particle
a high-speed electron or positron emitted in the decay of a radioactive isotope
 
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