One god under two names, across The Olympian Order and The Roman Inheritance.
Tychetye-keeFortune — Hellenistic personification of luckThe Olympian OrderFortunafor-tu-naGoddess of Chance — bringer of fortune both good and illThe Roman Inheritance
Why the sources call them one god
Her Roman counterpart was Fortuna, who in the Roman period developed a more elaborate cult