What continent has Outback on it?

The continent and country of Australia has a vast inland area colloquially known as 'The Outback". The outback is a generic term applied (very loosely) to anywhere in Australia which is more than 400 kms from the coast, except for in the west and through parts of South Australia where it applies to the semi-arid country extending right to the coast. Some of the outback is desert, some is semi-arid and some is where hundreds of thousands of head of sheep and cattle are run on huge stations.