A bank is a financial institution that accepts deposits from customers and provides various financial services. These services include savings accounts, checking accounts, loans, and credit cards. Banks play a crucial role in the economy by facilitating transactions and providing a safe place for people to store their money. In addition to personal banking, banks also serve businesses by offering commercial loans and investment services. They help businesses manage their finances and provide advice on financial planning. Overall, banks are essential for both individuals and businesses to manage their money effectively and securely.