兴旺 (xīngwàng) describes a business, family, or place that is thriving and growing vigorously, often with a sense of life and energy. Compared to 发达 (fādá), which focuses on economic development and infrastructure, 兴旺 emphasizes active prosperity and vitality. It is less formal than 繁荣 (fánróng) and 昌盛 (chāngshèng), which are more suited for written descriptions of economies or nations.