For the record, in English one does not HAVE to say "a piece of furniture" when talking about something that is obviously furniture. For example a table is furniure, a bed is furniture, a chair is furniture, etc.
BUT if it is not a common furniture item one would explain it by saying the whole phrase, for example, "a Louis XIV is a piece of furniture, a hassock is a piece of furniture, a sideboard is a piece of furniture," etc.
Just trying to be heplful here, because I answered the excercise like this, "a table is furniture" and I should not have been marked wrong.
how can I differentiate "une table et un meuble" from "une table est un meuble"? DL puts phrases without verbs in all the time. Is there a difference in the pronunciation of "et un" and "est un"?