Australia, isn’t it Oceania

America is a single continent too, or 3 subcontinents if you like to divide things.

(Turns out the OP’s definition is completely wrong, but who cares?)

It is? I learnt north and south were separate. So I guess what makes a continent a continent? Also what would the 3 subcontinents be? North, central, south? (Guesses wildly)
Everyone learns different definitions based on their education system’s world view, leading to a number of continents somewhere between 3 and 20. It turns out that nature doesn’t care for humans’ desire to put everything into neat, well-defined little boxes.

20?!

My own view is 4: Antarctica, Australia, America, Afro-eurasia. I’m not sure how you’d get to 3, unless you disqualified Australia.

I’ve also heard 7: Antarctica, Australia, split North + South America, split Africa + Europe + Asia.

I suppose you could add a few – I’ve heard the phrase “subcontinent of India”, so that could be an 8th continent. Then maybe Greenland for 9. Beyond that, though? IDK what would even make sense.

BRB, I have to go search for expansive continent definitions.

20?!

See

I would have hoped it had something to do with tectonic plates

here.

Ah, the plates! Thank you.