Architecture
Architecture is both the process and the product of planning, designing, and constructing buildings or any other structures. 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.
Built Environment
In social science, the term built environment, or built world, refers to the human-made surroundings that provide the setting for human activity, ranging in scale from buildings to parks. It has been defined as "the human-made space in which people live, work, and recreate on a day-to-day basis." The "built environment encompasses places and spaces created or modified by people including buildings, parks, and transportation systems." In recent years, public health research has expanded the definition of "built environment" to include healthy food access, community gardens, mental health, "walkability", and "bikeability".
Architecture
The true architectural art, that art toward which I would lead you, rests, not upon scholarship but upon human powers; and, therefore, it is to be tested, not by the fruits of scholarship, but by the touch-stone of humanity.
Louis Sullivan, Kindergarten Chats (1918) Ch. 10 : A Roman Temple