Green Tara is a tantric meditation deity whose practice is used by practitioners of the Tibetan branch of Vajrayana Buddhism to develop certain inner qualities and understand outer, inner and secret teachings about compassion and emptiness. Tara is actually the generic name for a set of Buddhas or bodhisattvas of similar aspect. These may more properly be understood as different aspects of the same quality, as bodhisattvas are often considered metaphoric for Buddhist virtues.