What is the difference between the Sender Profile & Delivery Profile?

A sender profile specifies the from information for a send ie., ‘From Name’ and ‘From Email Address’, in a central location which can be used across multiple sends without the user needing to select it each time.
In a delivery profile, you specify the IP address and choose the header and footer to be used for a send. A delivery profile, similar to the sender profile, can be reused across multiple sends.