We all know the term, Veda. Most people who know the term, Veda have probably heard of another term, Upanishad. Those who heard the term, Upanishad may have heard the term Bramha Su:thras. Upanishads are the essence of Ve:da. Bramha Suthra:s are in essence Upanishads but in a different format called laws.
Source: JIVA Shamshabad News