Safety-deposit boxes are essential for protecting valuable items, documents, and cash. However, there are plenty of alternate terms for such boxes. The term "safe-deposit boxes" is often used interchangeably with safety-deposit boxes. Banks also refer to these as "secure deposit boxes." Both these terms refer to a sturdy box that is secured using a lock or combination. Lockbox is a term used to describe a range of deposit boxes used by businesses. Some banks refer to safety boxes simply as "deposit boxes." Whatever term you use, it's essential to choose a box that can withstand natural disasters, thefts, and fires.