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Defining what you are looking at can be daunting. Here is a guide to commonly used terms in home furnishings:

– Reproduction: A line-for-line copy of an original piece using the same primary and secondary materials. A reproduction looks like the original and has the same features. Consumers who pull out a drawer from a Williamsburg chest, for example, may be surprised to find no drawer guides and pine used for the inside and back.

– Adaptation: A copy that looks like the original but has been changed in size or function. There were no 19th Century armoires equipped to be entertainment centers. A consumer today can buy many. That change is one common example of an adaptation, as is an antique look-alike scaled down to fit modern rooms.

– Interpretation or variation: The use of some element from an antique in a new way. A motif, such as a carved shell pattern, lends a historical aura to a piece that in other respects differs in style, construction and function from an authentic antique.