What is the relationship between Thunderbolt and DisplayPort?

Thunderbolt is a hardware interface that supports data transfer and video output, while DisplayPort is a video interface standard. Thunderbolt 3 and later versions utilize the USB-C connector and are compatible with DisplayPort, allowing for video signals to be transmitted through the Thunderbolt connection. This means devices that support Thunderbolt can often also connect to DisplayPort monitors, enabling high-resolution displays and multiple monitor setups. Essentially, Thunderbolt incorporates DisplayPort as part of its functionality, enhancing its versatility.