Marathon
there is only one gold coin
You might be looking for the word "alphabet." I realize that's eight letters.
The Greeks added eight extra letters and modified the symbols for the letters.
No. The are not "the same". The Greek goddess Chaos means invisible air and gloomy mist; the gap, the space between heaven and earth. Nun/Nu and Naunet were two of the eight Ogdoad (a set of four goddesses and four gods). The name of the water of chaos was Nun.
The god of thunder in Roman mythology is Jupiter, more commonly known by his Greek mythology counterpart (they are both the same character). When the Romans took over the Greek empire, the cultures diffused. The stories/myths of the Greeks were passed on to the Romans, who gave the characters Roman names. I believe seven of the eight current planets of our solar systems are named after Roman gods, the exclusion being Earth.
Eleven states have exactly eight letters in their names.
Huang Di
Yes. Octobrachial is the meaning of eight arms in Greek
A word that has eight letters is pictures
Octo is the Greek word for 'eight.'
No continent has eight letters. The closest is Australia with nine letters.
Seven letters - not eight letters listed in question Bushier