What are the countries that are in autralian continent?

Australia is the only country physically on Australia. However, there is a larger region usually matched with Australia (Oceania) to form Australia & Oceania. The countries in this region include Papua New Guinea, Australia, New Zealand, Fiji, Nauru, Palau, Tuvalu, Vanuatu, Micronesia, Solomon Islands, Marshall Islands, Samoa, Tonga, and Kiribati.