Answer:
Both are professional titles acquired through specific schooling and a licensing process.
With regards to the building industry, an architect is the generalist and an engineer is the specialist. Generally, the architect is the conceptual designer of the project, involved through all stages of a project. Engineers come and go (some stay significantly longer than others) and focus on a specific aspect of a building such as the mechanical systems or the structure. Architects and engineers together make up "the design team," and they work together to make the design complete. Architectural elements may be moved for the structure to make more sense and vice versa. The architect is usually the overseer, communicating with all the disciplines involved. The architect is likely the first to notice that the proposed ductwork conflicts with a structural beam, for example.
If the project is large enough, you might have two sets of architect teams: the design architect and the executive architect, also known as the Architect of Record. The executive architect has a more technical focus.
The technical aspects of architecture include compliance with building codes and figuring out all the building stuff related to the final product. For example, a plumbing engineer's drawing will have a line on a drawing representing a plumbing line. An architect's drawing might include a detail that shows that plumbing line as an actual pipe with a thickness with the bricks and cement block of the wall it is penetrating as well as whatever seal will be keeping the rain out.
Because of the difference in role and scope between an architect and engineer, the engineer of a project will be working on many other projects simultaneously, while the architect is dedicated to a few or just the one.
Explanation:
