Which characteristic is unique to opera buffa compared to opera seria?

Opera buffa is characterized by its incorporation of humor, which distinguishes it from opera seria. While opera seria, or serious opera, focuses on grand themes often based on mythological or historical subjects, opera buffa embraces comedic elements and lighthearted plots, often involving everyday characters and situations. This distinction allows opera buffa to present narratives that entertain and engage audiences through wit, humor, and satire, making it a more accessible and relatable form of opera. The use of humor in opera buffa can manifest through playful dialogue, clever arias, and humorous scenarios, creating an atmosphere that contrasts sharply with the solemnity and dramatic gravity found in opera seria. This comedic approach makes opera buffa a vital part of the operatic tradition, showcasing the lighter side of human experience through music and performance.