All the following terms refer to flash memory-based USB drives. JumpDrive and ThumbDrive are brands from Lexar and Trek 2000 International, respectively, and Memory Stick is Sony's trade name for its digital camera memory cards, not a USB drive. See
U3,
secure USB drive,
USB and
memory card.
DRIVES & STICKS
USB drive
flash drive
flash disk
USB flash drive
jump drive
thumb drive
pen drive
flash stick
jump stick
thumb stick
USB stick
memory stick (see Sony Memory Stick)
USB memory stick
gig stick
stick drive
KEYCHAINS
keychain drive
key drive
USB key
memory key
disk key
A Key USB Flash Drive
This ad from Best Buy in 2012 covered all the bases for USB terminology.