Interior design is the art and science of enhancing the interior of a building to achieve a healthier and more aesthetically pleasing environment for the people using the space.
Architecture is both the process and the product of planning, designing, and constructing buildings or any other structures.
Engineers, as practitioners of engineering, are professionals who invent, design, analyze, build, and test machines, systems, structures and materials.
Contractor is responsible for the day-to-day oversight of a construction site, management of vendors and trades, and the communication of information