illustration

noun

• The act of illustrating; the act of making clear and distinct; education; also, the state of being illustrated, or of being made clear and distinct.
• That which illustrates; a comparison or example intended to make clear or apprehensible, or to remove obscurity.
• A picture designed to decorate a volume or elucidate a literary work.
• A calculated prevision of insurance premiums and returns (life insurance)