What's the difference between a crater and a basin? When I was searching the name of the Moon's largest crater, many websites said that it was the South Pole-Aitken Basin. But in some definitions I've found, the word &quot;crater&quot; is used to describe smaller impacts on the Moon surface, and since the South Pole-Aitken Basin has a diameter of almost 2500 km, I'm not sure if you could say that the South Pole-Aitken Basin is the Moon's largest crater.
The French version of the Wikipedia article has a &quot;nomenclature&quot; section, absent from the English version. It says:

Lorsque l'énergie cinétique de l'impacteur est suffisante pour
atteindre le manteau à travers la croûte et provoquer des épanchements
magmatiques, on parle de bassin d'impact et non plus de cratère
d'impact.

Which roughly translates to:

When the kinetic energy of the impacting body is sufficient to reach
the mantle through the crust and trigger magmatic outpourings, the
term impact basin is used instead of impact crater.

However, there is no reference to back this claim, so I would take this with a pinch of salt...