Which term refers to expressing or representing something in a specific way?

The term that best refers to expressing or representing something in a specific way is "characterizing." This verb form conveys the action of describing the distinctive traits or qualities of a person, object, or concept. When you characterize something, you provide specific details that help convey its identity or essence.

In contrast, while "character" refers to the set of qualities that defines an individual or entity, it does not inherently carry the action of representation. "Characteristic" denotes a feature or quality that is typical of something but does not imply the act of expressing or representing it. "Characterization," although closely related, typically refers to the result of the act of characterizing, meaning it focuses more on a description or portrayal rather than the active expression itself. The emphasis on the action in "characterizing" clarifies why this is the suitable choice in the context of the question.