Australia is the name of the continent I got taught in school. May depend on where you went to school but Oceania is accepted so let's be happy about that.
Australia is is a continent according official JetPunk policy. However, changes are now pending to have a note saying that Australia is not considered an island country, as well as an expansion of the quiz selector
"Two Merriam-Webster dictionaries online (Collegiate and Unabridged) define Australasia as "Australia, New Zealand, and Melanesia". The American Heritage Dictionary online recognizes two senses in use: one more precise, being similar to the aforementioned senses, and the other broader, loosely covering all of Oceania."
Australia is a large contiguous land mass, much larger than the next biggest in Greenland, and roughly equal in size to Europe, which is really only a large peninsula of Asia
Oceania and Australasia are terms for the geographic areas that include Australia and some of the surrounding islands.
Island countries like New Zealand, Japan or the UK are by definition not on any continent, but are associated with their nearest continents
"Technically", Australia is a landmass. That's the only thing that's technical, and not debatable. Considering it an island or a continent is arbitrary and conventional.
Make sure that you also try islabonita's first (and possibly better) version!
UPDATE:Now the history version is out too!
"Two Merriam-Webster dictionaries online (Collegiate and Unabridged) define Australasia as "Australia, New Zealand, and Melanesia". The American Heritage Dictionary online recognizes two senses in use: one more precise, being similar to the aforementioned senses, and the other broader, loosely covering all of Oceania."
Oceania and Australasia are terms for the geographic areas that include Australia and some of the surrounding islands.
Island countries like New Zealand, Japan or the UK are by definition not on any continent, but are associated with their nearest continents
Madagascar: 592,796 sq. km (228,880 sq. mi)