Difference between commencement speech and valedictory speech?

I've heard both terms 'commencement speech' and 'valedictory speech' thrown around during graduation season, and I'm honestly not sure what the difference is. Can anyone explain?

Commencement speech and valedictory speech are two different types of speeches traditionally given during graduation ceremonies, and they serve distinct purposes.

A commencement speech is typically delivered by an invited guest speaker, who is often a notable or successful individual in a particular field, such as a public figure, celebrity, or leader in academia, business, or entertainment. The purpose of a commencement speech is to inspire and motivate graduates as they transition from academic life to the "real world." The speaker usually shares their personal experiences, advice, and wisdom, providing insight on how to navigate life's challenges and utilize the knowledge and skills the graduates have acquired during their academic journey.

On the other hand, a valedictory speech is given by the valedictorian, who is the top-performing student in their graduating class. The valedictorian is chosen based on their academic achievements, such as the highest grade point average. The valedictory speech serves as a farewell address to their fellow graduates, focusing on the collective experiences that the graduating class has shared over the years. The speech typically reflects on the accomplishments and memorable moments of their academic journey, as well as offering gratitude to teachers, administrators, family members, and friends who have supported them along the way. Additionally, the valedictory speech usually includes a message of encouragement and optimism for the future.

In summary, the key difference between a commencement speech and a valedictory speech is the speaker and purpose. A commencement speech is delivered by an invited guest speaker and aims to inspire and motivate the graduates, while a valedictory speech is given by the class valedictorian and serves as a farewell address that reflects on the shared experiences of the graduating class.