Architecture is a way of handling complex multiple types of elements considering lots of issues  and come up with the most sound solution. The characteristic of the final results depends on the design principles and primary goal. On the other hand engineering is a calculative way of achieving a certain design goal. So It's the most important phase of design and built a project. The beauty of a project comes when we give challenges on the both part of this process. This is possible due to a competent approach to the composition and workmanship.