The set of pieces that gravitate immediately over the columns "Column (Architecture)") in architectural architecture is called entablature or cornisament.

It is divided into three sections:

Entablatures are basic elements of classical architecture. The structure of the entablature varies for the three classical orders: Doric, Ionic and Corinthian.

The origin of these elements seems to be that the ancient builders imitated in stone the shapes with which they built in wood. Thus the architrave would be the stone transposition of a wooden beam. The triglyphs (Doric order) of the frieze would be the heads of the secondary beams that rest on the previous one, and the cornice would be the edge of the wooden planking.

On the cornice, two other angled cornices or a single arched cornice rest, forming a crown, calling this set * pediment "Fronton (architecture)")*. The space circumscribed by the resulting triangle is called tympanum "Etympanum (architecture)"). The sides of the pediment make up the sides of the roof.

The entablature is supported by the columns "Column (architecture)") and its height varies from four to five modules or diameters of the shaft of a column depending on the order to which it belongs. When several orders are superimposed, the entablatures of the intermediate orders do not have a cornice, reserving this for the top floor of the building.

Among the different forms of pediment, the most common are: