In my studies, I have come across many traditions, and many different deities in each that not only share similar attributes, but also similar colors, whether its Heru of the Neteru, Shango of the Orishas and Amadioha of the Alusi, or Erzulie Dantor of the Loa, Het-Heru of the Neteru, and Osun of the Orishas. But over and over again, priests will say that the Orishas and the Neteru or Loa or whatever tradition are similar but NOT interchangable, which confuses me. If each of them is controls a certain aspect of our world, how can they all be different? What is the difference between the Neteru, Orishas, Loa, Alusi, etc?