Definitions

Architecture is the art of design buildings and inhabitable structures. The architect, it's applicant, not only designes the structures or buildings, also leads the construction of it and even takes care of the details of the final result like the decoration.
 * Architecture**

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Urbanism is the branch of science that studies large areas and condition them so they can be urbanized. The urban planner is the applicant of urbanism and takes care of the development of the new urbanizations and furthermore, takes care of the development of cities that are already established and controls the way they grow.
 * Urbanism**

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