regular polyhedron: any one of five solids whose faces are congruent regular polygons and whose polyhedral angles are all congruent
entity: that which is perceived or known or inferred to have its own distinct existence (living or nonliving)
discoid lupus erythematosus: a chronic skin disease occurring primarily in women between the ages of 20 and 40; characterized by an eruption of red lesions over the cheeks and bridge of the nose