Nine-year-old Mahi and her mom, Megha, walked through the enormous, gleaming halls of the Yashobhoomi convention center in Delhi. They were there for a seminar, but Mahi's eyes were drawn to the colorful stalls. "Mom," she asked, looking up, "what's the real difference between money and currency?" Megha smiled, about to answer, when a man with kind eyes at a nearby currency-themed counter overheard them. "That is a very clever question," he said warmly. "My name is Mr. Gyan. With your mom's permission, may I try to explain it?" Megha nodded, "We'd love that!" Mr. Gyan leaned on his counter. "Let’s travel back in time, Mahi. Before there were notes and coins, a person might trade a bag of salt for a clay pot. In that trade, the salt was their 'money' because both people agreed it had value." "So, money is anything that people agree has value and can be used to trade," Mr. Gyan said. "It's a shared idea, a promise that you can exchange it for something else you need." "Now, 'currency' is a special type of money," he continued, carefully picking up a fifty-rupee note. "This is currency. It's the official money, the notes and coins, that a country's government creates and backs." He pointed to the emblem on the note. "The government gives its promise that this piece of paper is worth fifty rupees. That promise is why we can all use it to buy things, and everyone accepts it. It's government-guaranteed money." Mahi's brow furrowed in thought. "So... all currency is money," she said slowly. "But not all money is currency? Like the bag of salt from the old days?" "Exactly!" Mr. Gyan beamed, his eyes twinkling. "You've got it! The salt was money for those two people, but it wasn't official currency for the whole land. Currency is the money that everyone in a country agrees to use." A bright smile spread across Mahi's face. "Oh! I get it! Currency is like the official school uniform that all the students wear, but money is like any clothes you can wear to play in the park!" Megha gave her daughter a proud hug. "That's a perfect way to put it, Mahi." They both thanked Mr. Gyan for his wonderful explanation. As they walked away, Mahi felt like she had discovered a brand new secret about the world.