Is Australia alone, or the wider region of Oceania, the seventh continent?

Geographers use the term Oceania for a region that includes the continent of Australia together with most of the Pacific island countries and territories, and the seven-continent model's own seventh slot is written by some sources as "Australia/Oceania", treating the two labels as interchangeable. Continents themselves are identified by convention rather than by any strict criterion, so whether the seventh continent is the single-nation Australian landmass or the wider multi-nation Oceania region is a live difference in convention, not a factual dispute with a settled answer.