illustrate
v.v. to explain something by using examples, pictures, or stories so it is easier to understand. You can also use it when one thing clearly shows that another thing is true.
v. to clarify or explain a concept by providing examples, analogies, or visual aids; to serve as a clear instance or evidence of a phenomenon. Transitive — requires a direct object.
The teacher uses a diagram to illustrate how the heart works.
To illustrate the point about rising costs, the speaker showed a graph of energy prices over the last decade.
The recent failure of the regional bank serves to illustrate the inherent risks of over-leveraging assets in a volatile market, providing a cautionary tale for future investors.
Back-formation from illustration.
The verb is transitive and takes a direct object. When used with visual media, it often takes the preposition 'with'.
The author illustrates about the problemThe author illustrates the problemIllustrate is a transitive verb and does not take the preposition 'about' before its object.