Is Australia the country in Australia the continent?

The country of Australia includes the continental island and some of the surrounding islands.

The country of Australia expands beyond the continental surface land mass of Australia and includes the island state of Tasmania and many smaller island territories including Norfolk Island, Christmas Island, The Cocos Islands, Heard Island and McDonald Island.

Australia Plate
The Australian continental (or tectonic) plate includes Australia, New Zealand, New Guinea and many Pacific and Indian Ocean island nations.