Dionysos

Dios *is* the genitive form of Zeus—dios, deus, Zeus, and others all link back to a root meaning ‘sky’—though the ‘dio’ in Dionysus could be from ‘die’, meaning “to chase, impel, run”.

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Sources: https://en.m.wiktionary.org/wiki/Διόνυσος#Ancient_Greek, https://en.m.wiktionary.org/wiki/%CE%94%CE%B9%CF%8C%CF%82#Ancient_Greek, https://en.m.wikipedia.org/wiki/Dionysus

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(I haven’t done more reading than just this, so if you’re interested please seek out more firsthand research :D)

Where did you get that Zeus=Dios? Show me your compelling evidence and the documented history that says Zeus = Dios, because if you can't I will tell my friends in facebook that you are just misleading, but if it's the fact why do we refuse? I said documented history not HIS-STORY.

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[http://www.perseus.tufts.edu/hopper/text?doc=Perseus%3Atext%3A1999.04.0057%3Aentry%3D*dio%2Fs2 -ed]

Nysa, the famous mountain, was actually the mountain on which the god Dionysos was raised, which is why it is a part of his name.