In guitar music, especially electric guitar, a power chord    (also fifth chord) is a colloquial name for a chord that consists of the root note and the fifth. Power chords are commonly played on amplified guitars, especially on electric guitar with distortion. Power chords are a key element of many styles of rock and especially in heavy metal, and punk rock.
Lurianic Kabbalah is a school of kabbalah named after the Jewish rabbi who developed it: Isaac Luria (1534–1572; also known as the "ARI'zal", "Ha'ARI"(meaning lion) or "Ha'ARI Hakadosh".