Would someone please tell me plainly about 2 Engineering categories?

Architects are typically the ones who design the look of a building, and how it all fits together. They often work closely with civil or construction engineers, who are intimately familiar with how to build things that won't fall down. Depending on what kinds of drawings you are making, it could be applied to either. If you mainly enjoy designing how something would look, that's more related to architecture. If you like the nitty gritty 'how am I going to build this thing' side of it, engineering is probably more for you. Either side would be a minimum of 4 years for a degree. Architects typically take at least 6 years to get licensed, and certainly a big part of architecture is learning enough about how thing stay up that your designs are realistic.