Negros Occidental and Negros Oriental are two provinces on the island of Negros in the Philippines. Negros Occidental occupies the western part of the island, while Negros Oriental occupies the eastern part. Negros Occidental is part of the Western Visayas region, while Negros Oriental belongs to the Central Visayas region.

-https://en.wikipedia.org/wiki/Negros#:~:text=Politically%20and%20linguistically%2C%20Negros%20is,but%20was%20eventually%20shut%20down.