A section is a cut through the 3d-model. An elevation is different. It shows the face of something, or perhaps more correct, the projection of an object/s to a plane.
Project Definition: Establishing Scope, Vision and Work Effort. In order to have any realistic shot at a successful project, (delivered on time and on budget) the overall vision and work effort must first be fully defined --- i.e. broken down into small, manageable and actionable parts.
Definition of project. 1  transitive verb. 2  1a : to devise in the mind : designb : to plan, figure, or estimate for the future. 3  2 : to throw or cast forward : thrust. 4  3 : to put or set forth : present for consideration. 5  4 : to cause to jut out. 6  5 : to cause (light or shadow) to fall into space or (an image) to fall on a surface.