The difference between Titans and Gods
What's the difference?
let's first answer the question: "Who were the Titans?"
in Greek mythology, in the beginning there were the primeval gods Gaia (the Earth) and Uranus (the Sky). They had several sons and daughters: three Cyclopes (one-eyed giants), three Hecatonchires (giants with 100 hands and 50 heads), six Titans
(Oceanus, Coeus, Crius, Hyperion, Iapetus and Cronus/Kronos) and six Titanesses
(Theia, Rhea, Themis, Mnemosyne, Phoebe and Tethys).
The children and grandchildren of some of these Titans were considered Titans, too, namely the children of Iapetus, Coeus, Crius and Hyperion.
Uranus hid the Cyclopes and the Hecatonchires inside Gaia, and so she was in a lot of pain. She convinced her sons, the Titans, to help her get rid of Uranus. Her youngest son, Cronus, castrated his father and became the supreme leader. The legend says that it was Uranus who called his sons "titenes" (the straining ones), because of their revolt against him.
Cronus married his sister Rhea and they became the rulers of the world. They had six children, who were gods. His mother and father had prophesized that one of his sons will dethrone him, so he just swallowed each baby, as soon as he/she was born.
The last one was Zeus, who was save by his mother. Rhea presented Cronus a stone, wrapped in children's clothes, he swallowed
it and so Zeus was safe. When he grew up, he gave his father a potion and so Cronus brought up his children, the gods.
After that, a war betwen titans and gods ensued, called Titanomachy. The gods, helped by the Gigantes, the Hecatonchires and the Cyclopes, managed to defeat the Titans and to imprison almost all of them in the Tartarus.
Zeus and his brothers and sisters became rulers of the world and took residence on Mount Olympus. Their children were gods, to.
So I guess the difference between Titans and gods is the fact that the Titans were more primitive gods (they also represented brute, rough force), while the gods were the successive generation, which was more refined.
The Titanomachy (the War of the Titans) represented the fight between two generations of gods, each with a different view of the world, if you want, so we might consider it a kind of fight between old and new, tradition and progress. (After all, grandpa Uranus hid his children inside the Earth, his son Cronus rebelled because of that, but when he became a father, he did worse, because he swallowed his children, and the grandson, Zeus, just accepted his sons and daughters. Sometimes he was proud of them, other times he would play with his kids or give them presents.)
Hope that helped :-)