An Accadian is a person from Accad, a race which supposedly lived in Babylonia before the Assyrian conquest.
Cecil James Mullo Weir has written: 'A lexicon of Accadian prayers in the rituals of expiation' -- subject(s): Akkadian language, Dictionaries, English
Aramaic originated as a language spoken by ancient Semitic people in the region of modern-day Syria. Through conquests and political influence, Aramaic gradually spread throughout the Fertile Crescent, becoming the lingua franca of the region by the 6th century BCE. Its use was further promoted by the Assyrian and Babylonian empires, as well as by the Persian Empire in later centuries.