Architecture is the art and technique of designing and building, as distinguished from the skills associated with construction.[3] It is both the process and the product of sketching, conceiving,[4] planning, designing, and constructing buildings or other structures.[5] The term comes from Latin architectura; from Ancient Greek ?????????? (arkhitékt?n) 'architect'; from ????- (arkhi-) 'chief', and ?????? (tékt?n) 'creator'. Architectural works, in the material form of buildings, are often perceived as cultural symbols and as works of art. Historical civilizations are often identified with their surviving architectural achievements.[6]