The word "imagination" definitely suggests that we can also think in images. Visual language is defined as a system of communication using visual elements.The term visual language in relation to vision describes the perception, comprehension, and production of visible signs. Just as people can verbalize their thinking, they can visualize it. A diagram, a map, and a painting are all examples of uses of visual language. Its structural units include line, shape, color, form, motion, texture, pattern, direction, orientation, scale, angle, space, and proportion.
Via Jeffrey Jablonski, Ph.D.