Chaos (mythology)

Chaos was the nothingness at the beginning of the world, described in the creation myths of Classical mythology. It was the state the universe (or cosmos) was in before it was created. Early Christians used the word "chaos"in a different way, with the word meaning  disorder or randomness or confusion. Modern non-mythological use of the word has these meanings. https://www.merriam-webster.com/dictionary/chaos

Chaos is often identified as a god, who filled the gap between Heaven and Earth. Born out of chaos were the first beings:
Gaia, the Earth
Tartarus, the Underworld
Uranus, Sky 
Nyx, the Night
Erebos, the Darkness of the Underworld
In some versions, Uranus was a creation of Gaia, not Chaos. In other versions, Eros, god of love, was also a creation of Chaos

References

Category:Greek mythology
Category:Creation myths