(n.) The act of performing divine or solemn service, as established by law, precept, or custom; a formal act of religion or other solemn duty; a solemn observance; a ceremony; as, the rites of freemasonry.

amenities anniversaries baccalaureate service celebrating celebration ceremonial ceremonies ceremony civilities commemoration commencement convocation custom dignities dressing ship duty elegancies empty formality exercise exercises fanfare fanfaronade festivity flourish of trumpets form form of worship formal formalities formality formula formulary function gentilities graces graduation graduation exercises holiday holy rite inaugural inauguration initiation institution jubilee liturgy marking the occasion memorialization memory mode of worship mummery mystery observance occasion office order of worship ordinance ovation performance practice prescribed form procedure rejoicing religious ceremony religious rites remembrance revel rite de passage rite of passage rites ritual ritual observance rituality rituals routine sacrament sacramental salute salvo service solemn observance solemnity solemnization testimonial testimonial banquet testimonial dinner toast tribute triumph