Is Thunderbolt USB4 the same as USB-C?

USB-C is a connection type. USB-C is not Thunderbolt 3, Thunderbolt 4, or USB-4. … In fact, Intel gave the Thunderbolt 3 standard to the USBIF which allowed for the adoption of the technology on USB-4 devices. As far as compatibility and performance goes, they are practically the same even though the names are different.