What is to illustrate is an example of?

Illustration is the act of showing or explaining something by providing examples, visual aids, or images. For example, an illustration can be a diagram, a chart, a picture, or a graph that helps to clarify a concept or a topic. In a textbook, illustrations are often used to make abstract concepts more concrete and understandable to students. In magazines or newspapers, illustrations are used to complement articles or stories that would otherwise be hard to visualize. Illustrations can also be used in advertising to promote a product or service, and in art to express ideas or emotions. Overall, illustrations are essential tools for communication, education, and entertainment.