chloasma: a tan discoloration of a woman's face that is associated with pregnancy or with the use of oral contraceptives
entity: that which is perceived or known or inferred to have its own distinct existence (living or nonliving)
agavaceae: chiefly tropical and xerophytic plants: includes Dracenaceae (Dracaenaceae); comprises plants that in some classifications are divided between the Amaryllidaceae and the Liliaceae