A caj, or "great family" (plural caju), was a key element of Orion society, and provided it with a loose organization (Decipher RPG module: Aliens). Orion society consisted of sizable clans of many families and thousands of members, all joined by marriage, alliances and business dealings, forming an interdependent network that wielded significant strength and influence and formed a relatively close-knit economic, political, and social unit (FASA RPG modules: The Orions: Book of Common Knowledge, Orion Ruse).