Molar

Steep mound with a flat summit and small dimensions.

Knoll

Small and long height.

Solid

Group of heights or mountains.

Marsh

Low, swampy land flooded by sea water.

islet

Very small island.

Coast

Region that is located near the sea and receives its influence.

Flat

Equal and extensive field or terrain, without highs or lows.

Big city

A group of buildings and streets, governed by a town council, whose dense and numerous population is usually engaged in non-agricultural activities.

pit

Concavity, depression or hollow in the ground, sometimes of glacial origin.

Sickle

Narrowness of a deep valley.

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