Mystery : something that is difficult or impossible to understand or explain.Request : an act of asking politely or formally for something.Order : the arrangement or disposition of people or things in relation to each other according to a particular sequence, pattern, or method.Proverb : a short, well-known pithy saying, stating a general truth or piece of advice.Adage : a proverb or short statement expressing a general truth.Synonym of Adage is Proverb