S: (n) delta (a low triangular area of alluvial deposits where a river divides before entering a larger body of water) "the Mississippi River delta"; "the Nile delta"
S: (n) diapir (a domed rock formation where a core of rock has moved upward and pierced through the more brittle overlying strata)
S: (n) folium (a thin layer or stratum of (especially metamorphic) rock)
S: (n) foreshore (the part of the seashore between the highwater mark and the low-water mark)
S: (n) kettle hole, kettle ((geology) a hollow (typically filled by a lake) that results from the melting of a mass of ice trapped in glacial deposits)
S: (n) pit, cavity (a sizeable hole (usually in the ground)) "they dug a pit to bury the body"
S: (n) trou-de-loup (a sloping pit with a stake in the middle used as an obstacle to the enemy)
S: (n) barbecue pit (a pit where wood or charcoal is burned to make a bed of hot coals suitable for barbecuing meat)
S: (n) borrow pit (a pit created to provide earth that can be used as fill at another site)
S: (n) divot ((golf) the cavity left when a piece of turf is cut from the ground by the club head in making a stroke) "it was a good drive but the ball ended up in a divot"
S: (n) fire pit (a pit whose floor is incandescent lava) "the fire pit of the crater"
S: (n) quicksand (a pit filled with loose wet sand into which objects are sucked down)
S: (n) sandpit (a large pit in sandy ground from which sand is dug)
S: (n) sawpit (a pit over which lumber is positioned to be sawed by two men with a long two-handed saw)
S: (n) tar pit (a natural accumulation of bitumens at the surface of the earth; often acts as a trap for animals whose bones are thus preserved)
S: (n) pothole, chuckhole (a pit or hole produced by wear or weathering (especially in a road surface))
S: (n) sinkhole, sink, swallow hole (a depression in the ground communicating with a subterranean passage (especially in limestone) and formed by solution or by collapse of a cavern roof)
S: (n) Shenandoah Valley (a large valley between the Allegheny Mountains and the Blue Ridge Mountains in northern Virginia; site of numerous battles during the American Civil War)
S: (n) Ardennes (a wooded plateau in the Champagne-Ardenne region of France; the site of intense fighting in World War I and World War II)
S: (n) Nejd, Najd (a central plateau region of the Arabian Peninsula; formerly an independent sultanate until 1932 when it united with Hejaz to form the Kingdom of Saudi Arabia)
S: (n) Guiana Highlands (a mountainous tableland in northern South America; extends from Venezuela into Guyana and northern Brazil)
S: (n) Colorado Plateau (a large plateau to the south and west of the Rocky Mountains; abuts mountains on the north and east and ends in an escarpment overlooking lowlands to the south and west; the Grand Canyon is carved out of the southwestern corner)
S: (n) Llano Estacado (a large semiarid plateau forming the southern part of the Great Plains)
S: (n) Massif Central (a mountainous plateau in southern France that covers almost one sixth of the country)
S: (n) Highlands, Highlands of Scotland (a mountainous region of northern Scotland famous for its rugged beauty; known for the style of dress (the kilt and tartan) and the clan system (now in disuse))
S: (n) hill (a local and well-defined elevation of the land) "they loved to roam the hills of West Virginia"
S: (n) butte (a hill that rises abruptly from the surrounding region; has a flat top and sloping sides)
S: (n) foothill (a relatively low hill on the lower slope of a mountain)
S: (n) Areopagus (a hill to the to the west of the Athenian acropolis where met the highest governmental council of ancient Athens and later a judicial court)
S: (n) Zion, Sion (originally a stronghold captured by David (the 2nd king of the Israelites); above it was built a temple and later the name extended to the whole hill; finally it became a synonym for the city of Jerusalem) "the inhabitants of Jerusalem are personified as `the daughter of Zion'"
S: (n) Pennines, Pennine Chain (a system of hills in Britain that extend from the Scottish border in the north to the Trent River in the south; forms the watershed for English rivers)
S: (n) Capitol Hill, the Hill (a hill in Washington, D.C., where the Capitol Building sits and Congress meets) "they are debating the budget today on Capitol Hill"
S: (n) Breed's Hill (a hill in Charlestown that was the site of the battle of Bunker Hill in 1775)
S: (n) San Juan Hill (a hill in eastern Cuba (near Santiago de Cuba) that was captured during the Spanish-American War) "Theodore Roosevelt and his Rough Riders became famous for their charge up San Juan Hill"
S: (n) mountain, mount (a land mass that projects well above its surroundings; higher than a hill)
S: (n) mull (a term used in Scottish names of promontories) "the Mull of Kintyre"
S: (n) point (a promontory extending out into a large body of water) "they sailed south around the point"
S: (n) Cape Horn (a rocky headland belonging to Chile at the southernmost tip of South America (south of Tierra del Fuego))
S: (n) Gibraltar, Rock of Gibraltar, Calpe (location of a colony of the United Kingdom on a limestone promontory at the southern tip of Spain; strategically important because it can control the entrance of ships into the Mediterranean; one of the Pillars of Hercules)
S: (n) Cape Hatteras (a promontory on Hatteras Island off the Atlantic coast of North Carolina) "frequent storms drive ships to their destruction on Cape Hatteras"
S: (n) Cape Canaveral, Cape Kennedy (a sandy promontory (formerly Cape Kennedy) extending into the Atlantic Ocean from a barrier island off the eastern coast of Florida; the site of a NASA center for spaceflight)
S: (n) Cape Sable (a promontory on the far southern part of Nova Scotia)
S: (n) Jebel Musa, Abila, Abyla (a promontory in northern Morocco opposite the Rock of Gibraltar; one of the Pillars of Hercules)
S: (n) ridge (a long narrow natural elevation or striation)
S: (n) bank (a long ridge or pile) "a huge bank of earth"
S: (n) bluff (a high steep bank (usually formed by river erosion))
S: (n) sandbank (a submerged bank of sand near a shore or in a river; can be exposed at low tide)
S: (n) shoal (a sandbank in a stretch of water that is visible at low tide)
S: (n) bar (a submerged (or partly submerged) ridge in a river or along a shore) "the boat ran aground on a submerged bar in the river"
S: (n) tideland (land near the sea that is overflowed by the tide)
S: (n) Barbary Coast (the Mediterranean coast of northern Africa that was famous for its Moorish pirates)
S: (n) Aeolis, Aeolia (an ancient coastal region of northwestern Asia Minor (including Lesbos) where the Aeolians founded several cities around 1100 BC)
S: (n) bank (sloping land (especially the slope beside a body of water)) "they pulled the canoe up on the bank"; "he sat on the bank of the river and watched the currents"
S: (n) bank, cant, camber (a slope in the turn of a road or track; the outside is higher than the inside in order to reduce the effects of centrifugal force)
S: (n) Fountain of Youth (a fountain described in folk tales as able to make people young again) "Ponce de Leon discovered Florida while searching for the Fountain of Youth"
S: (n) geyser (a spring that discharges hot water and steam)