Comparison to “Decline”: In English, “decline” can be a neutral, data-driven term (e.g., “a decline in sales”). While 没落 (mòluò) can be used for industries, it carries a much richer, more poetic, and often sadder connotation. It's less about statistics and more about the loss of spirit, influence, and former glory. To say a family has “declined” might mean they have less money. To say a family has 没落 (mòluò) implies they have lost their social standing, influence, and the prestige they once held for generations. It speaks to a fall from grace.