Template talk:Priesthoods of ancient Rome

Definitions?
Are there definitions for the categories used here? In particular, I'm wondering about "major" colleges. What does this mean? Does it have any ancient authority? I'd expect there to be only four here as, e.g., in the Epulones article. The Vestals are also sui generis, though I supposed they could fall in the broader "other" category. - Eponymous-Archon (talk) 16:22, 18 March 2016 (UTC)