Money is everything that serves as a universally accepted medium of exchange or means
of payment. Money can be considered as a special commodity that mediates and facilitates
the exchange of  other goods. In this sense money works as a common equivalent.

How coins are made?

Coins have nearly always been made of metal. Metal working demands considerable skill
and technology. The metal has to be extracted from its natural state, often by mining, and then turned into the required form. Quality control and consistency are vital.

How paper money is made?

The manufacture of banknotes plays an important role in allowing them to be used as money with confidence. Paper money is well protected from counterfeiting by means of water marks, security threads, microprinting in the design, and use of reflective materials.