I agree with Turnbull & SoCalGangs completely. It's primary reference to Sicilian OC groups. Other countries have their own unique brand name for OC groups: England =Firms, China= Triads, Japan= Yakuza, Jamaica = Posses/Massives, USA= Mobs/Syndicates, etc.

I always notice the activities are the most common way to define the groups. Too much emphasis on characteristics of different groups when they formed in different time periods & cultures. There's not a 1 catch all requirements to fit all of them around the world. Political corruption helps it all the same worldwide.