Yes they were named after Greek gods.
They are the same gods same power but different names. The most important gods are named after planets
It depends on which Greek/Roman god/goddess.
there is no difference just Pluto is roman because greek gods turned in to roman gods and changed names.
Mars is a Roman Mythologies god. The Greek god however is Ares. They are both gods of war.
Poseidon was a Greek god, the god of the sea. His Roman counterpart is Neptune. Many of the Roman and Greek gods were similar deities, but their names were different.
Zeus was the god of Greeks and the Roman
anemoi
The greek and roman god of sun is Apollo for both greek and roman
The planets in our solar system were named after Roman gods. Mars was the Roman god of war, equivalent to Greek Ares.
Janus, the Roman god of beginnings, transitions, and passages, does not have a direct counterpart in Greek mythology. However, he is sometimes associated with the Greek god Hermes due to their shared roles as guides and protectors of travelers.
Arcus is not a Greek god, but a roman god. She corresponds to Iris, goddess of the rainbow - messenger of the gods, in Greek mythology.
Hermes was the Greek messenger god. His Roman name was Mercury.
Greek and Roman gods are immortal. It is impossible for them to die.