I know one that isn't. Janus. Roman God of Doorways
If You are talking about greek an roman gods, it is roman.
no
Mars is the Roman counterpart to Ares.
Hera(Greek) Juno(Roman)
Greek and Roman gods are myths
Ancient Helenism. Wiccans also worship Greek/Roman gods too.
It depends on which Greek/Roman god/goddess.
How they are perceived by the ancient people who worshiped them; the Greek gods as interactive and social, the Roman gods as remote and revered as gods and military.
The existence of gods is entirely a belief. But Roman gods are the same as Greek gods, with different names. If you search the beliefs of Greek gods, they are off the wall. But there is no evidence of any culture's gods. Myself, I believe all culture's gods are fake, except the Christian god, Jehovah.
Both Greek and Roman gods are the same in essence, but have different aspects. Roman gods were taken from Greek gods, but tend to be more warlike and disciplined. Just like the Greek and Roman cultures, the Roman gods were more warlike, disclipined and honorable. The Greek gods on the other hand, tended to merge into the more artistic creative side. However, the main similarity between Greek and Roman gods is simply this: They are both the gods of whatever they were in the other culture. For example, Hera from Greek myths, is still the goddess of marriage in her Roman aspect, or Juno. Another example is Aphrodite, she is still the goddess of love in her Roman aspect, Venus.
The Greek and Roman gods drank Ambrosia
Hades in greek, Pluto in roman.