DINING TABLE is a piece of FURNITURE, usually made of WOOD, METAL or GLASS. It is indispensable or irreplaceable in a house, and has multiple functions in private life, social and even religious. Surely it is the simplest piece of FURNITURE.
The history of the TABLE is full of uncountless experiments of shapes and materials, some of them even considered impossible to use, or even unthinkable, like GLASS. Of course the most common (and for which the table is defined in the dictionary) is rectangular, but its use and its adaption to other situations makes the table assuming several SHAPES AND SIZES.
A TABLE can have multiple functions in HOUSE, depending on of each person's lifestyle. It may be used for entertaining guests, playing only this function, or can even be used for the whole family, used for daily meals or socializing.