I'm not a native English speaker and I was wondering the difference between those two terms.
From what I understood so far 'group' is a generic word used to denote a number of persons/things considered related in some way. 'grouping' is used to denote a group of people sharing a common intent or interest.
Is this the case? It seems that 'grouping' has a more specific meaning and that 'group' can be used always in place of 'grouping' (because it's a more general term).
So in which case do you use 'group' and in which one do you use 'grouping' instead?