An illustration Is a drawing that allows an author to show you what he or she is writing about. For example, if an author were writing about a rose, an illustration of a rose would bring additional meaning to the text. It would show the bush it comes from, a stem, thorns, leaves, and petals.
Illustration is another way of saying "example" because you can use an object or idea to illustrate—or provide an example of—another object or idea. An illustration can be used to either clarify a thought or to support a stance.
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