Nouns denoting natural objects (not man-made)

glacial boulder
a boulder that has been carried by a glacier to a place far distant from its place of origin
 
slice
a thin flat piece cut off of some object
 
perforation
a hole made in something
 
Hampton Roads
a channel in southeastern Virginia through which the Elizabeth River and the James River flow into Chesapeake Bay
 
divot
a piece of turf dug out of a lawn or fairway (by an animals hooves or a golf club)
 
ridgeline
a long narrow range of hills
 
Lake Erie
the 4th largest of the Great Lakes; it is linked to the Hudson River by the New York State Barge Canal
 
fireball
the luminous center of a nuclear explosion
 
Andes
a mountain range in South America running 5000 miles along the Pacific coast
 
ribbon
any long object resembling a thin line
 
Catskill Mountains
a range of the Appalachians to the west of the Hudson in southeastern New York; includes many popular resort areas
 
bottomland
low-lying alluvial land near a river
 
Carlsbad Caverns
a group of caverns in southeastern New Mexico noted for their stalactites and stalagmites
 
direct transmission
a transmission mechanism in which the infectious agent is transferred directly into the body via touching or biting or kissing or sexual intercourse or by droplets entering the eye or nose or mouth
 
Cape Sable
a cape at the southwest tip of Florida; the southernmost part of the United States mainland
 
mid-water
the water that is well below the surface but also well above the bottom
 
Cimarron River
a river that rises in northeastern New Mexico and flows eastward into Oklahoma where it becomes a tributary of the Arkansas River
 
Africa
the second largest continent; located to the south of Europe and bordered to the west by the South Atlantic and to the east by the Indian Ocean
 
river bottom
a channel occupied (or formerly occupied) by a river
 
meander
a bend or curve, as in a stream or river
 
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