Is a usb flash drive a USB stick?

usb flash disk is u disk, flash disk interface USB, IEEE1394, E-SATA, using USB interface flash disk referred to as U disk. Flash disk uses USB interface, read and write speed is much higher than floppy disk. U disk is short for USB disk, and USB disk is just a homophonic name of U disk, is a flash memory, so also called flash disk. The biggest feature is: small, easy to carry, storage capacity, cheap.