All unaccounted money anywhere is known as black money..!
Duplicate currency note printed by black marketer is fake note;
Fake notes in circulation have also become a business for frauds;
When money is made invalid or demonized, it is just a paper only!
Invalid notes useless for any purpose are simply burnt or throw out;
Money becomes waste paper, when time allowed for exchange ends;
There is no security for money inside or outside banks sans secrecy!
Many frauds indulge in making duplicate credit/debit cards to steal
All money kept in the bank accounts too and put people in jeopardy
Unless they are always in the watch-out to safeguard money forever!
There is no carefree life for anyone in the material world whether one
Has any money or no money with or without credit/debit cards too!