Nouns denoting natural objects (not man-made)

Earth's crust
the outer layer of the Earth
 
floater
an object that floats or is capable of floating
 
Aries
a small zodiacal constellation in the northern hemisphere; between Pisces and Taurus
 
section
a very thin slice (of tissue or mineral or other substance) for examination under a microscope
 
Quaoar
a planetoid discovered in 2002
 
floor
the ground on which people and animals move about
 
El Libertador
a mountain in the Andes in Argentina (22,047 feet high)
 
Ganymede
the largest of Jupiter's satellites
 
Victoria Falls
a waterfall in the Zambezi River on the border between Zimbabwe and Zambia; diminishes seasonally
 
flake
a small fragment of something broken off from the whole
 
IJssel river
a river in the central Netherlands flowing north to the IJsselmeer
 
Loch Ness
a lake in the Scottish highlands; the largest body of fresh water in Great Britain
 
mantle
the layer of the earth between the crust and the core
 
shell
the exterior covering of a bird's egg
 
Gasherbrum
a mountain in northern Kashmir (26,470 feet high)
 
stepping stone
a stone in a marsh or shallow water that can be stepped on in crossing
 
variable
a star that varies noticeably in brightness
 
precipice
a very steep cliff
 
Guantanamo Bay
an inlet of the Caribbean Sea; a United States naval station was established on the bay in 1903
 
Puget Sound
an inlet of the North Pacific in northwestern Washington State
 
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