A cover bed is a decorative bed somewhat much like a 4-poster bed. A typical cover bed often options posts at each of the 4 corners extending 4 feet high or extra above the mattress. Ornate or decorative cloth is commonly draped across the higher area between the posts and a strong swath of fabric might create a ceiling, or cover immediately over the bed.
A 4-poster bed is a bed with 4 vertical columns, one in each nook, that help a tester, or higher (often rectangular) panel. This tester or panel will usually have rails to permit curtains to be pulled around the bed. There are a variety of vintage 4-poster beds extant relationship to the 16th century and earlier; many of these early beds are extremely ornate and are made from oak. An example of such an early 16th-century 4-poster resides in Crathes Citadel, which was made for the unique citadel house owners in the Burnett of Leys family.