These administrative divisions generally correspond roughly with the social units of the extended family (tokatoka), clan (mataqali), tribe (yavusa), and land (vanua).
Each mataqali is presided over by a chief, styled Ratu if male or Adi (pronounced Ahn-di) if female.
Chiefs presiding over units above the mataqali have other, more prestigious titles, although they, too, are typically addressed and referred to as Ratu or Adi, although there are regional variations.
(Titles can be deceptive: not every chief styled Roko Tui heads a Provincial Council).
An anomaly exists in the west of the country, where the provinces of Ba and Ra are split between the confederacies of Kubuna and Burebasaga.
This does not affect administration, however, as the confederacies and the provinces fulfill different roles, the former being based on the relationship of chiefs and clans, and the latter being formal political entities.
But the Tui Viti title was relatively new; it was never a traditional kingly title of Fiji, but came into being after the death of Tanoa Visawaqa and the rise of his son Seru Epenisa Cakobau who proclaimed himself Tui Viti after conquering much of Fiji and persuading his fellow-chiefs to recognize him as their overlord.