A chest for valuables is a secure storage container that can be used to store items of value. The two most common terms for this type of container are 'arca' and 'COFFER, ' both of which have four and six letters respectively. An arca is typically a large, rectangular box with a hinged lid, while a COFFER is usually a smaller, more ornate box with a lid that is often decorated with carvings or other decorations. Both types of containers are designed to protect the contents from theft or damage.