a plane; a study of geometry is called "plane" geometry.
Flat can be a noun:I have a flat on my car.When used to modify another word, it is not a noun:I have a flat tire on my car.
bland, dull, flat, weak
Collapsed. Pancaked Crashed Toppled
Another word for grassy shoulder is a berm. It refers to a flat strip of land beside a road, raised bank or terrace.
Yes, the noun 'plane' is a common noun; a general word for a type of aircraft; a general word for a tool used to smooth the surface of wood; a general word for a flat surface; a general word for a level of development or existence.The word "plane" is also a verb and an adjective.
lever
A mesa has a flat top.
The flat surface felt smooth.
A floor.
It is an incline.
A flat surface generally refers to a horizontal surface and is referred to as the plane.
even ? when something is flat and level it is often referred to as an even surface.
An inclined plane
A flat.
a platue
level
Another word for Earth's outer surface is "crust."