A pendant and a locket are both types of necklaces that hang from a chain, but they differ in their design and purpose.

A pendant is a decorative piece of jewelry that hangs from a chain or a cord. It can come in many shapes, sizes, and designs and is often made of precious metals like gold, silver, or platinum. Pendants can be worn for fashion purposes, as a statement piece, or to express one’s personal style.

A locket, on the other hand, is a type of pendant that has a small compartment or space inside that can hold a tiny picture, a lock of hair, or other small keepsake. The locket is designed to be opened and closed, and the wearer can store a personal memento inside, close to their heart. Lockets are often given as gifts to mark special occasions like weddings, graduations, or the birth of a child.

In summary, a pendant is a decorative piece of jewelry that is worn for fashion purposes, while a locket is a type of pendant that has a functional purpose of holding a keepsake or memento.