It consists of shapes or figures. We can simply illustrate any objects or organisms with these 2 elements. But if we think in the other way, what do those graphical elements relate you to? I can illustrate a moon with a half round shape. But if I first illustrate a half round shape, then it can be interpreted as many other different things. In this case, the interpretation of a graphical shape or figure varies according to the subjective view of a viewer. It then becomes the viewer who gives the meaning to the shapes by imagining what it can relate him/her to the most.