Hadean
The Hadean () is a geologic eon of the Earth pre-dating the Archean. It began with the formation of the Earth about 4.6 billion years ago and ended, as defined by the ICS, 4 billion years ago. , the ICS describes its status as ""informal"". Geologist Preston Cloud coined the term in 1972, originally to label the period before the earliest-known rocks on Earth. W. Brian Harland later coined an almost synonymous term, the "Priscoan period", from "priscus", the Latin word for "ancient". Other, older texts simply refer to the eon as the Pre-Archean.
Hadad
He was attested in Ebla as "Hadda" in c. 2500 BCE. From the Levant, Hadad was introduced to Mesopotamia by the Amorites, where he became known as the Akkadian (Assyrian-Babylonian) god Adad. Adad and Iškur are usually written with the logogram —the same symbol used for the Hurrian god Teshub. Hadad was also called "Pidar", "Rapiu", "Baal-Zephon", or often simply Baʿal (Lord), but this title was also used for other gods. The bull was the symbolic animal of Hadad. He appeared bearded, often holding a club and thunderbolt while wearing a bull-horned headdress. Hadad was equated with the Greek god Zeus; the Roman god Jupiter, as Jupiter Dolichenus; the Indo-European Nasite Hittite storm-god Teshub; the Egyptian god Amun.