Conductance may refer to.
Conductivity (or specific conductance) of an electrolyte solution is a measure of its ability to conduct electricity.
Electrical resistivity (also known as resistivity, specific electrical resistance, or volume resistivity) is a fundamental property that quantifies how strongly a given material opposes the flow of electric current.
Hydraulic conductivity, symbolically represented as K, is a property of vascular plants, soils and rocks, that describes the ease with which a fluid (usually water) can move through pore spaces or fractures.
Ionic conduction (denoted by -lambda) is the movement of an ion from one site to another through defects in the crystal lattice of a solid or aqueous solution.
Superconductivity is a phenomenon of exactly zero electrical resistance and expulsion of magnetic flux fields occurring in certain materials, called superconductors, when cooled below a characteristic critical temperature.
Thermal conductivity (often denoted k, λ, or κ) is the property of a material to conduct heat.