Vajrayāna along with Mantrayāna, Guhyamantrayāna, Tantrayāna, Secret Mantra, Tantric Buddhism, and Esoteric Buddhism are names referring to Buddhist traditions associated with Tantra and "Secret Mantra".
Practitioners of Vajrayāna need to abide by various tantric vows or pledges called samaya.
These are extensions of the rules of the Prātimokṣa and Bodhisattva vows for the lower levels of tantra, and are taken during initiations into the empowerment for a particular Unsurpassed Yoga Tantra.
The special tantric vows .