what is that?
if something is round, we here in the industry tend to define it as having spherical-like curves. a square is NOT round. please take note, a square is NOT round.
this map of the earth is a 2D rendition of what the world would look like if we were to flatten it, as the earth is actually round most of the time
here they have been plotted out in what we call a map
those are continents, huge masses of land comprised of multiple countries, silly!