Politics of the dance floor

Since I've been doing very little aside from working, filling out forms, and sleeping I've had a lot of time to think about random things. Here's the biggest one to hit me recently. Two popular Canadian bands are the New Pornographers and Broken Social Scene. When the press describes NP, they call them a "supergroup." While the same media outlets describe BSS, they call them a "collective." I don't really see the difference. Both groups are, fundamentally, the brain child of two people (AC Newman & Dan Bejar for NP and Kevin Drew & Brendan Canning for BSS) and feature other members who have/had semi-successful careers outside of the current project. What makes one a collective and the other a supergroup? The only answer I can think of is the type of music each of these bands makes. NP is, for lack of a better term, a power pop band going to the extreme. BSS is a indie jam band with pop elements. NP also features a semi-stable line-up while BSS is supposedly a rotating crew of musicians (but it seems the same five guys are always there). While I understand that this question really doesn't matter, I have to think of something while I stacking the fruit otherwise I start listening to the background music, and we know why that's a problem.