Nouns denoting natural objects (not man-made)

the water that is well below the surface but also well above the bottom
a large piece of something without definite shape
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
guiding star; a star that is used as a reference point in navigation or astronomy
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
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
an outcropping of rock that extends outward
Wheeler Peak
a mountain peak in northeastern New Mexico in the Rocky Mountains
an arc of colored light in the sky caused by refraction of the sun's rays by rain
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
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
a mountain peak in the Andes in Bolivia (21,201 feet high)
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