During the Vedic period, particularly the Later Vedic period, specific terms refer to units of value or weights used in trade. 'Nishka' was initially a gold ornament but later came to be used as a unit of value for exchange. 'Shatman' was another weight measure or unit of value, specifically a unit of 100 rattis (or Krishnalas). 'Krusnal' (or Krishnala) refers to the seed of the gunja berry, which was used as a standard unit of weight, especially for measuring precious metals like gold and silver, and became a basis for coinage weights. These terms represent units of wealth and exchange during the Vedic period. 'Gan' refers to tribal assemblies or groups, and 'Shreni' refers to guilds of merchants or artisans, which are organizational forms, not mediums of exchange themselves, and are more characteristic of the post-Vedic period (like the Mahajanapada era onwards).