Polygons 3D models rely on mesh geometry (vertices, edges, faces) for precise, editable shapes, while sculpting 3D models use digital clay-like tools to mold organic, high-detail forms by adding/removing volume.
Polygons excel at hard surfaces (machines, buildings) or low-poly assets (games), as you edit individual mesh parts for control. Sculpting is ideal for organic shapes (characters, creatures), letting you add fine details (wrinkles, textures) without early mesh constraints.
Choose polygons for precise game props; pick sculpting for natural, detailed organic designs.