topography
US /təˈpɑː.ɡrə.fi/
UK /təˈpɑː.ɡrə.fi/

1.
the arrangement of the natural and artificial physical features of an area
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The topography of the region made road construction challenging.
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We studied the topography of the mountain range before our hike.
2.
the study and detailed description of the surface features of a region
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Cartographers specialize in topography and map-making.
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The course covers various aspects of physical geography, including topography.