Albert Einstein, one of the world's greatest scientists, hit the nail right on the head when he pondered the question "what is engineering?"
Engineering is the application of scientific knowledge to solving problems in the real world. While science (physics, chemistry, biology, etc.) allows us to gain an understanding of the World and the Universe, Engineering enables this understanding to come to life through problem solving, designing and building things. The electronic device you are using to read this article was engineered from raw plastic, metal, silicon and lines of software code before being transformed into a usable device.
Engineers can be distinguished from other professions by their ability to solve complex problems and implement solutions in cost effective and practical ways. This ability to face a problem, work through various thoughts and abstract ideas and then translating them into reality is what is so exciting about engineering.