Resistance is the property of a conductor, which determines thequantity of current that passes through it when a potentialdifference is applied across it.A resistor is a electrical componet with a predeterminedelectrical resistance, like 1 ohm, 10 ohms 100 ohms 10000 ohmsetc..depending on how much current you want to pass through acircuit, you would design the circuit with the requiredresistors