Though the question is a bit hard to interpret, I would consider it this way:
Massed practice, in which the entire team works together on specific tactical situations or plays or even scrimmages to work on game-specific skills are often a part of most practices.
The distributed practice may in fact focus on more specific skills within the game that cannot be accurately recreated or effectively recreated in the massed setting. This could be something like free-throws in basketball or penalty kicks in football. By distributing the team into smaller groups, a more intense focus can be placed on those specific skills rather than putting all the skills together at the same time as in a scrimmage or more game-similar type situation.