Banker's checks, also known as cashier's checks, are secure and verified payment instruments issued by banks. They are popular for handling large transactions, such as real estate purchases or vehicle sales, due to their credibility and guaranteed funds. However, there are alternative synonyms for banker's checks that may be used depending on the region and banking practices. Some common synonyms include: bank drafts, certified checks, official checks, treasurer's checks, and demand drafts. These terms are used interchangeably and refer to the same financial instrument, offering a convenient and reliable way to transfer large sums of money.