The term "illuminating" in literature wields a dual significance, operating both on a literal level and as a metaphor for clarity and insight. Authors often use it to depict physical light—whether describing the searchlight that cuts through darkness ([1]), the moonlight bathing a room in pearly radiance ([2],[3]), or even technical references to lighting gas ([4],[5])—imparting a tangible brightness to a scene. At the same time, the adjective serves a figurative purpose by underscoring moments of revelation or deep understanding, as when a character’s smile suddenly lights up his face ([6]) or when a narrative offers an insightful glimpse into human nature ([7],[8]). This versatility allows "illuminating" to enrich both descriptive passages and critical commentary, providing readers with a vivid sense of both physical and metaphorical light.