Australia, Commonwealth of Australia - a nation occupying the whole of the Australian continent; aboriginal tribes are thought to have migrated from southeastern Asia 20,000 years ago; first Europeans were British convicts sent there as a penal colony

Australian state - one of the states constituting Australia

Hobart - a port and state capital of Tasmania

Australia - the smallest continent; between the South Pacific and the Indian Ocean

island - a land mass (smaller than a continent) that is surrounded by water