Pat, I'll answer this one for you. Over the course of years talking about this, we've discussed the pros/cons of a basketball-optimized arena floor plan versus what we called a "hockey-optimized" floor plan.
We used to call the former a "basketball arena" and the latter a "hockey arena." Even though neither of those descriptions was entirely accurate, it just helped us clarify what we were referring to.
Now we've gotten to referring to the basketball-optimized floor plan as "multi-purpose" as it could host many events other than basketball, but not as many as what we now refer to as an "all-purpose" arena, which could host everything the multi-purpose arena could, then some (hockey, indoor football/soccer, circus, monster trucks/motor cross, etc.