A Point marks a position in space. In pure geometric terms, a point is a pair of x, y coordinates. It has no mass at all. Graphically, however, a point takes form as a dot, a visible mark. A point can be an insignificant fleck of matter or a concentrated locus of power. It can texture, shape, or plane.
A line is an infinite series of points. Understood geometrically, a line has length, but no breadth. A line is the connection between two point, or it is the path of a moving point. A line can be a positive mark or a negative gap. Lines appear at the edges of objects and where two planes meet. Graphically, lines exist in many weights; the thickness and texture as well as the path of the mark determine its visual presence. Line can be straight or curved, continuous or broken. When a line reaches a certain thickness, it becomes a plane. Lines multiply to describe volumes, planes, and textures.
A plane is a flat surface extending in height and width. A plane is the path of a moving line; it is a line with breadth. A line closes to become a shape, a bounded plane. Shapes are planes with edges. In vector-based software, every shape consists ofline and fill. A plane can be parallel to the picture surface, or it can skew and redede into space. A plane can be solid or perforated, opaque or transparent, textured or smooth.
Volume is an empty space defined by surface, lines, and points. When we fill in the space or give the perception that the space within a volume has been filled to some degree the volume contains mass. Solid Volume is a mass in therms of the expansive spread of material surfaces, and the solidity and weight which necessarily accompany such amplitude. The term "volume" is generally used to denote these characteristics of mass. Spatial Volume may also refer in a general sense to regions of space: to the multidimensional vastness of it. In employing the expression "spatial volume" my intention is to identify those particular regions of space which may be present in an object of mass-space which is positively shaped by surrounding surfaces and so becomes an interior volume, a hole if you like.