illustrates
v.v. to use an example, a picture, or a story to make an idea clear. It helps people understand exactly what you mean.
v. to clarify or explain a concept by providing examples, diagrams, or anecdotes. Transitive — requires a direct object representing the idea being clarified.
This chart illustrates how our sales grew last year.
The professor used a simple story about a baker to illustrate the complex economic theory of supply and demand.
The author's latest novel vividly illustrates the tension between traditional values and the rapid technological shifts of the early twenty-first century through its contrasting protagonists.
The verb is transitive and takes a direct object.
The graph illustrates about the growth.The graph illustrates the growth.Illustrate is a transitive verb and does not take the preposition 'about' before its object.