What are the major characteristics of Poseidon? What are the major characteristics of Vulcan? Is there a significant overlap between #1 and #2?
Poseidon
Poseidon is the Greek god of the sea and water, and is the brother of Zeus. Neptune is the Roman god of the sea. Hephaestus is the Greek god of fire. Hephaestus's ROman equivalent is Vulcan, the Roman god of fire.
Ancient Greek god of the sea, earthquakes and horses
Is Poseidon similar to the god Vulcan?