The standard shaderA small script that contains the mathematical calculations and algorithms for calculating the Color of each pixel rendered, based on the lighting input and the Material configuration. More info
See in Glossary presents you with a list of material parameters. These parameters vary slightly depending on whether you have chosen to work in the Metallic workflow mode or the Specular workflow mode. Most of the parameters are the same across both modes, and this page covers all the parameters for both modes.
These parameters can be used together to recreate the look of almost any real-world surface.