Vajrayāna Buddhism (Devanagari: वज्रयान; Tibetan: རྡོ་རྗེ་ཐེག་པ་, rdo rje theg pa; Mongolian: Очирт хөлгөн, Ochirt Hölgön) is also known as Tantric Buddhism, Tantrayāna, Mantrayāna, Secret Mantra, Esoteric Buddhism and the Diamond Vehicle. Vajrayana is a complex and multifaceted system of Buddhist thought and practice which evolved over several centuries. Its main scriptures are called Tantras. A distinctive feature of Vajrayana Buddhism is ritual, which are Skillful Means (Upaya), which is used as a substitute or alternative for the earlier abstract meditations.
The period of Indian Vajrayana Buddhism has been classified as the fifth or final period of Indian Buddhism. Although the first tantric Buddhist texts appeared in India in the 3rd century and continued to appear until the 12th century, scholars such as Hirakawa Akira believe that the Vajrayana probably came into existence in the 6th or 7th century, while the term Vajrayana first came into evidence in the 8th century.
According to Vajrayana scriptures Vajrayana refers to one of three vehicles or routes to enlightenment, the other two being the Hinayana (not to be confused with Theravada) and Mahayana.
Religion is a collection of cultural systems, belief systems, and worldviews that establishes symbols that relate humanity to spirituality and, sometimes, to moral values. Many religions have narratives, symbols, traditions and sacred histories that are intended to give meaning to life or to explain the origin of life or the universe. They tend to derive morality, ethics, religious laws or a preferred lifestyle from their ideas about the cosmos and human nature.
The word religion is sometimes used interchangeably with faith or belief system, but religion differs from private belief in that it has a public aspect[citation needed]. Most religions have organized behaviors, including clerical hierarchies, a definition of what constitutes adherence or membership, congregations of laity, regular meetings or services for the purposes of veneration of a deity or for prayer, holy places (either natural or architectural), and/or scriptures. The practice of a religion may also include sermons, commemoration of the activities of a god or gods, sacrifices, festivals, feasts, trance, initiations, funerary services, matrimonial services, meditation, music, art, dance, public service, or other aspects of human culture.