Resistivity:Resistivity is the opposite of electrical conductivity and measures how much a material resists the flow of electric current.
Superconductor: A superconductor is a material with zero electrical resistance, allowing for perfect conduction of electricity.
Semiconductor: A semiconductor is a material that has intermediate electrical conductivity between conductors and insulators. It can be controlled to behave as either an insulator or conductor by adding impurities or applying voltage.