Nouns denoting natural objects (not man-made)
- ore bed
- a stratum of ore
- gut
- a narrow channel or strait
- Danube River
- the 2nd longest European river (after the Volga); flows from southwestern Germany to the Black Sea
- Ophiuchus
- a large constellation in the equatorial region between Hercules and Scorpius
- satellite
- any celestial body orbiting around a planet or star
- neutron
- an elementary particle with 0 charge and mass about equal to a proton; enters into the structure of the atomic nucleus
- existence
- everything that exists anywhere
- divot
- (golf) the cavity left when a piece of turf is cut from the ground by the club head in making a stroke
- cavern
- a large cave or a large chamber in a cave
- Kanawha River
- a tributary of the Ohio River in West Virginia
- terrestrial planet
- a planet having a compact rocky surface like the Earth's; the four innermost planets in the solar system
- Golden Gate
- a strait in western California that connects the San Francisco Bay with the Pacific Ocean; discovered in 1579 by Sir Francis Drake
- Ebro River
- a river in northeastern Spain; flows into the Mediterranean
- Isthmus of Panama
- the isthmus that connects Central America and South America; was formerly called the Isthmus of Darien
- water system
- a river and all of its tributaries
- adjunct
- something added to another thing but not an essential part of it
- Caspian Sea
- a large saltwater lake between Iran and Russia fed by the Volga River; the largest inland body of water in the world
- lake bed
- the bottom of a lake
- oil-water interface
- an interface forming the boundary between the non-miscible liquids oil and water
- eyrie
- the lofty nest of a bird of prey (such as a hawk or eagle)
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