Resistor

Linear resistor, resistance at a certain temperature is almost constant and a certain value. Nonlinear resistance ,resistance of some materials obviously changes with current (or voltage), and its volt-ampere characteristic is a curve.
Fusible resistor, also called fuse resistor. Normally plays the dual role of resistance and fuse. When the circuit fails and its power exceeds the rated power, it will fuse like a fuse and disconnect the connected circuit.

Sensitive resistor: resistance is sensitive to a certain physical quantity (such as temperature, humidity, light, voltage, mechanical force etc.). Resistance changed by physical quantities change.