College fraternities and sororities

In North America, fraternities and sororities (Latin: fraternitas and sororitas, 'brotherhood' and 'sisterhood') are social clubs at colleges and universities. They are sometimes collectively referred to as Greek life or Greek-letter organizations, as well as collegiate fraternities or collegiate sororities to differentiate them from general, non-university-based fraternal organizations and fraternal orders, friendly societies, or benefit societies.

Source: Wikipedia — College fraternities and sororities (CC BY-SA 4.0)