Why is Australia sometimes considered a continent, but Greenland never is? Aren’t they both large islands that could both pass as continents?

Question

Why is Australia sometimes considered a continent, but Greenland never is? Aren’t they both large islands that could both pass as continents?

In: Planetary Science

Answer 1

Greenland area: 836,000 sq. miles. Not its own tectonic plate.

Australia area: 2,968,000 sq. miles. Its own tectonic plate.