The difference between a "face" and a "flat surface" is found in what is being described by each term. A "face" refers either to the direction of a surface or to the simple fact of a surface as a surface. By contrast, a "flat surface" refers to the quality of the surface in question. Thus, one "face" of a building may be flat, smooth, curved, etc., while another may be similar or different.
A face is a specific side of a three-dimensional object, while a flat surface refers to a surface that has no curves or bumps. All faces are flat surfaces, but not all flat surfaces are faces on a three-dimensional object.
geography studies the surface of the Earth via maps whereas geomorphology studies the science behind the shifting of the Earth surface. (i.e. earthquakes, melting polar caps, etc...)
A foothill is a large hill with a rounded top A plateau is a hill with a flat top
a map is flat an atlas has different types of maps and a globe is round
A mountain is high elevated piece of land. a prairie is flat lower piece of land
A flat drawing of the Earth is called a map. Maps are two-dimensional representations of the Earth's surface that provide various types of information such as political boundaries, topography, and transportation routes.
flat & non-flat
the face
According to my son's math homework a flat surface on a solid is called a face
A face.
A Face
It is a face.
A sphere has a surface but no flat face.
A face
A face.
Cone
A face.
Each flat surface is a face