Nouns denoting natural objects (not man-made)
- Mount Kilimanjaro
- the highest peak in Africa; located in northeastern Tanzania; 19,340 feet high
- Aquila
- a constellation in the Milky Way near Cygnus; contains the star Altair
- Prudhoe Bay
- a bay on the northern coast of Alaska where oil was discovered in 1968
- scale
- a thin flake of dead epidermis shed from the surface of the skin
- antiproton
- an unstable negatively charged proton; the antiparticle of a proton
- atmosphere
- the envelope of gases surrounding any celestial body
- Okefenokee Swamp
- a large swampy area of northeast Florida and southeast Georgia
- Sculptor
- a faint constellation in the southern hemisphere near Phoenix and Cetus
- upper mantle
- the upper part of the mantle
- Argun River
- a river in eastern Asia that arises in China and flows northeast along the border between China and Russia to become a tributary of the Amur River
- aery
- the lofty nest of a bird of prey (such as a hawk or eagle)
- Muztagh
- a highest mountain peak in the Kunlun Shan in China; near the Indian border (23,891 feet high)
- River Cocytus
- (Greek mythology) a river in Hades that was said to be a tributary of the Acheron
- Denali Fault
- a major open geological fault in Alaska
- Delphinus
- a constellation in the northern hemisphere near Pegasus and Aquila
- Red River
- a tributary of the Mississippi River that flows eastward from Texas along the southern boundary of Oklahoma and through Louisiana
- plate
- a rigid layer of the Earth's crust that is believed to drift slowly
- Connecticut River
- a river in the northeastern United States; flows south from northern New Hampshire along the border between New Hampshire and Vermont and through Massachusetts and Connecticut where it empties into Long Island Sound
- Antarctic continent
- an extremely cold continent at the south pole almost entirely below the Antarctic Circle; covered by an ice cap up to 13,000 feet deep
- Tyan Shan
- a major mountain range of central Asia; extends 1,500 miles
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