Final answer:
Mozart and Salieri were both prolific composers who wrote operas, but Mozart was more famous for his contributions to Romantic music.
Step-by-step explanation:
Mozart and Salieri were both composers of the Classical period and had some similarities, although they also had important differences. While both were prolific composers and wrote operas, Mozart was more renowned for his contributions to Romantic music. In contrast, Salieri's style was more conservative and adhered closely to Classical rules.