sentence: Fraternities are primarily for men, but less often, a fraternity can be for both men and women.
sentences_before: Fraternities and sororities' are social groups for college students, though sometimes high schools have them too. They exist mostly in the United States and Europe. They also denote whether the group is for men or women. Sororities are only for women.
concept_name: fraternity
headings: Fraternities and sororities