Hades three-headed guard dog Cerberus. The Etruscan god Aita and the Roman gods Dis Pater and Orcus were eventually taken as equivalent to Hades and merged into Pluto, a Latinization of Plouton (", Ploútōn"), itself a euphemistic title often given to Hades. The origin of Hades' name is uncertain, but has generally been seen as meaning "the unseen one" since antiquity. An extensive section of Plato's dialogue "Cratylus" is devoted to the etymology of the god's name, in which Socrates is arguing for a folk etymology not from "unseen" but from "his knowledge ("eidenai") of all noble things". Modern linguists have
Names of God in Islam 59. Mystic philosopher Ibn Arabi surmised that the 99 names are "outward signs of the universe's inner mysteries". There is no universal agreement among Muslims as to what exactly counts as a name of God, and what does not. Additionally, while some names are only in the Quran, and others are only in the hadith, there are some names which appear in both. Different sources give different lists of the 99 names. The following list is based on the one found in the "Jamiʿ at-Tirmidhi" (9th century). Other hadith, such as those of al-Bukhari, Sahih Muslim, Ibn Majah, al-Hakim al-Tirmidhi