Nouns denoting natural objects (not man-made)

low-lying land that has been reclaimed and is protected by dikes (especially in the Netherlands)
anything that is caught (especially if it is worth catching)
a crater that has collected cosmic material hitting the earth
(astronomy) a relatively small extraterrestrial body consisting of a frozen mass that travels around the sun in a highly elliptical orbit
unit cell
the smallest group of atoms or molecules whose repetition at regular intervals in three dimensions produces the lattices of a crystal
Cape York
the northern tip of Cape York Peninsula at the Torres Strait; the northernmost point of the Australian mainland
a long narrow natural elevation on the floor of the ocean
a long narrow (nearly landlocked) cove in Ireland
the water that is well below the surface but also well above the bottom
valence electron
an electron in the outer shell of an atom which can combine with other atoms to form molecules
Mount Hubbard
a mountain peak in southeastern Alaska that is part of the Coast Range (14,950 feet high)
Canis Major
a constellation to the southeast of Orion; contains Sirius
Ping River
a river in western Thailand; a major tributary of the Chao Phraya
Antarctic Ocean
the southern waters surrounding Antarctica
a steep descent of the water of a river
Bering Sea
part of the North Pacific between Alaska and Siberia; connected to the Arctic Ocean by the Bering Strait
Mackenzie River
a Canadian river; flows into the Beaufort Sea
Arctic Ocean
ice covered waters surrounding the North Pole; mostly covered with solid ice or with ice floes and icebergs
a hole made by an animal, usually for shelter
Mount Communism
the highest mountain peak in the Pamir Mountains; near the Chinese border in northeastern Tajikistan (24,590 feet high)
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