Scratch or engrave the surface.
A sharp projection from the surface of a bone is called a process. Bones can have different types of processes, such as a spinous process, which is a sharp, pointed projection; or a tuberosity, which is a large, rounded projection. Processes serve as attachment points for ligaments and tendons.
Thorns.
Urea has a sharp melting point because it undergoes a crystalline-to-liquid phase transition at a specific temperature. In contrast, glass does not have a sharp melting point because it is an amorphous solid with a disordered atomic structure, resulting in a gradual softening and melting process over a range of temperatures.
The point beneath the earth's surface where an earthquake originates is called the hypocenter.
True north runs from any point on the Earth's surface to the North Pole.
line
A continuous mark made on a surface by a moving point is called a line.
A mark made with something sharp is typically called a "scratch" or "gouge." It can also be referred to as a "cut" if it penetrates the surface. The specific term may vary depending on the context and the depth of the mark.
A Line.
If the mark is in the skin it would be called a gouge or a cut. If the mark is in a regular spot, for example a piece of paper it would be called a puncture.
brushstroke?
The shape you are describing is a cone. A cone has one flat circular base and one curved surface that tapers to a sharp point at the top. It does not have any sides, which aligns with your description, and it resembles a party hat in appearance.
The description given could be applicable to a pyramid
Sharp Point Press was created in 1982.
A continuous mark made on a surface by a moving point is known as a "line." Lines can vary in length, direction, thickness, and shape, and are fundamental elements in art and design. They can convey movement, direction, and define boundaries or shapes.
The mark made by a tool as it is drawn across a surface is commonly referred to as a "scratch." This term generally describes any line or indentation created by the contact of a sharp or pointed object with a surface. Scratches can vary in depth and length depending on the tool used and the material being scratched.
The sharp pointed tool used to mark on metal is called a scribe. It typically has a hardened steel point and is used to create precise lines or markings on metal surfaces for cutting or shaping. Scribers are essential in metalworking and machining processes to ensure accuracy.