The term Aia refers to the deities commonly worshipped by the humanoid cultures on the Tranquil Coast. Almost all cultures worship eight major Aia, each of which is usually associated with either the sun or one of the moons or wandering stars. Although the names for the individual Aia usually differ between cultures, their is often at least some degree of syncretism between them. Most cultures also worship a number of "minor" Aia.