Cambridge English : CPE (C2 Proficiency) - Reliefs

an upward slope or incline of a hill, path, or terrain

a very deep or seemingly bottomless hole or gorge in the earth or sea

a hole, gap, or slit in a structure or surface

raised outer edge of a curved road or track above the inner edge to counteract centrifugal force

a deep fissure carved into the earth's surface

a fissure in a surface or natural formation

the specific location where two or more streams or rivers physically unite

(in geology) a narrow break or crack that partially divides a rock or surface without completely separating it

not traversed by foot

a narrow crack or fissure in a surface, often found in rocks, walls, or other solid structures

a downward slope or incline, often gradual or curved

solid earth beneath one's feet, especially as contrasted with water or air