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social graces

n. 1 (plural of social grace English) 2 The collective skills for dealing with people and society.

Wikipedia
Social graces

Social graces are skills used to interact politely in social situations. They include manners, etiquette (the specific accepted rules within a culture for the application of universal manners), deportment, fashion and refinement (also known as sophistication). These skills were once taught to young women at a finishing school or charm school. The focus of social graces has changed over the last century, recently with an emphasis on business etiquette and international protocol.