Nouns denoting natural objects (not man-made)

mid-water
the water that is well below the surface but also well above the bottom
 
lump
a large piece of something without definite shape
 
WIMP
a hypothetical subatomic particle of large mass that interacts weakly with ordinary matter through gravitation; postulated as a constituent of the dark matter of the universe
 
lodestar
guiding star; a star that is used as a reference point in navigation or astronomy
 
Io
the closest of Jupiter's moons; has active volcanoes
 
Balkan Mountain Range
the major mountain range of Bulgaria and the Balkan Peninsula
 
Sacramento Mountains
mountain range in New Mexico to the east of the Rio Grande
 
Vetluga River
a river in central Russia; flows generally southward into the Volga
 
neighbour
a nearby object of the same kind
 
Dnieper River
a river that rises in Russia near Smolensk and flowing south through Belarus and Ukraine to empty into the Black Sea
 
Cataract Canyon
a tributary of the Grand Canyon
 
outthrust
an outcropping of rock that extends outward
 
Wheeler Peak
a mountain peak in northeastern New Mexico in the Rocky Mountains
 
rainbow
an arc of colored light in the sky caused by refraction of the sun's rays by rain
 
scree
a sloping mass of loose rocks at the base of a cliff
 
Edgeworth-Kuiper belt
a disk-shaped region of minor planets outside the orbit of Neptune
 
Sajama
a mountain peak in the Andes in Bolivia (21,391 feet high)
 
Strait of Hormuz
a strategically important strait linking the Persian Gulf and the Gulf of Oman
 
borrow pit
a pit created to provide earth that can be used as fill at another site
 
Illimani
a mountain peak in the Andes in Bolivia (21,201 feet high)
 
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