social occasion(n = noun.event) affair, function, occasion, social function - a vaguely specified social event; "the party was quite an affair"; "an occasion arranged to honor the president"; "a seemingly endless round of social functions"
is a kind of social event
has particulars: party, celebration, jubilation, ceremonial, ceremonial occasion, ceremony, observance, fundraiser, photo op, photo opportunity, sleepover

ceremonial occasion, economic and social council, economic and social council commission, festive occasion, medical social worker, occasion, on occasion, social, social action, social activity, social affair, social anthropologist, social anthropology, social assistance, social class, social climber, social climbing, social club, social contract, social control, social convention, social dancer, social dancing, social democracy, social democratic party, social development commission, social disease, social drinker, social event, social function, social gathering, social grace, social group, social insurance, social intercourse, social lion, social movement, social organisation, social organization, social outcast, social phobia, social policy, social process, social psychology, social rank, social reformer, social relation, social science, social scientist, social season, social secretary, social security, social security administration, social security number, social service, social station, social status, social stratification, social structure, social system, social unit, social welfare, social work, social worker