Difference between Loft boss/base and Boundary boss/base

Hello all !

I'm just beggining advanded level in Solidworks, and right now I'm trying to understand the way it works the feature "Boundary boss/base".

Honestly, so far now I cannot understand which is the "extra" or "new" contribution of this feature, comparing to Loft boss/base.   I've seen several examples, and as far as I understand, both features can achieve the same goals....

Please, does anybody have a good example comparing both features, and showing clear benefits of "Boundary boss/base"  ????'

Thank you very much in advance.

SolidworksParts And Features