What is the importance of ‘Compounding’ of infoobjects?

A Compound attribute differentiates a characteristic to make the characteristic uniquely identifiable. For example, in a Plant, there can be some similar products manufactured. (Plant A-- Soap,Paste,Lotion; plant B--Soap, paste, Lotion) In this case Plant A and Plant B should be made unique. So the characteristics can be compounded to make them unique.