This specific kind of illustration called graphic translation is a style that combines the elements of both icon and symbol to translate information into graphics. With this translation, people can infer what the subject is by a simple visualization of the graphic. For example, lets think of the characteristics of a dog. Figuring out how to define the average dog will help turn it into a graphic translation. So, we can think of dogs as playful, fun, a protector, and joyful. With these words we are able to combine them into a symbol/icon. There can be various ways to convey information into a stylized illustration. Whatever style you choose to go forward with, you want to make sure it is stripped down to the necessities, just enough to describe the subject.