Saving means regularly putting aside money each week or month. People may save for emergencies, large purchases, retirement or education. It is good for families to save as it provides security for unexpected costs, allows purchasing big items, and can help pay for education. Common methods for saving include piggy banks, banks, post offices, building societies which offer banking and loans, and credit unions which are owned by members and offer services like loans. Choosing a saving method depends on the interest rate and ease of withdrawing funds from the account.