What is a zero ohm resistor and why is it called a resistor
Anyone with a basic sense of logic would have the following question: What is a zero ohm resistor and why is it called a resistor?
It is called a "resistor":
Because it is in the form of a standard resistor.
Because it can stand-in for resistor (there was a resistance previously or will be in the future)
Jumpers are more of a thru-hole variety. Zero ohm resistors are available in standard SMD sizes of common resistors.
Zero ohm resistors can also be used as a semi-permanent "switch" (connection is broken when the device is removed from the board).