The term “Tantra” after about 500 BC, in Buddhism, Hinduism and Jainism is a bibliographic category, just like the word Sutra (which means “sewing together”, mirroring the metaphor of “weaving together” in Tantra). The same Buddhist texts are sometimes referred to as tantra or sutra; for example, Vairocabhisambodhi-tantra is also referred to as Vairocabhisambodhi-sutra.[21] The various contextual meanings of the word Tantra vary with the Indian text and are summarized in the appended table.