Palisade
Cliffs is plural. Cliff is singular.
A location on a line is often called a point, or a place on the line.
a line. arrow on one end is called a ray and no arrows is called a line segment.
The line that crosses the y-axis is called the intercept.
Palisade
A line of cliffs formed by displacement along a fault is known as a fault scarp.
Scarp
Fjord maybe?
The White Cliffs of Dover.
Scarp
Coastal erosion
This is called a waterfall
they are called cataracts.
Yes, that is why they are called clay cliffs. When it dries, clay is firm, and forms a soft rock, however it is easily eroded, so clay cliffs are often unstable.
The cliffs and canyons of Starved Rock are made of an Ordivician age sandstone called St. Peter sandstone.
A chasm or gorge