[realxrobau]

Australia is the world's largest island at 7.9m km² ... Not sure why they're trying to say Greenland is larger.

[HWR_14]

They aren't trying to say Australia is smaller. They sought to exclude it by saying it was the biggest of "non-continental" islands.

[pseudocomposer]

Antarctica is a larger “island” than Australia. But both are also continents, while Greenland is not (yes, this is rather arbitrary labeling, but it is what it is).

[hulitu]

> yes, this is rather arbitrary labeling, but it is what it is

AFAIK continents are based on tectonic plates.