No matter where you go or what you do in America, you will want to have some form of US currency with you at all times.
Yes, credit cards are common, but they aren’t yet accepted everywhere. And anyway, a few bills or coins will come in handy when you need a trip on public transportation, copies in the public library, or maybe just an emergency snack! Understanding the value of each form of US currency will give you a head start as a new resident of America.
US currency has many names, from the common (money, cash, bucks), to the not-so-common (greenbacks), to the downright silly (moolah). No matter what you call it, be sure to keep some form of US currency in your pocket whenever you leave the house.