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.
Project Scope - Management Glossary Definition. The project scope defines all of the work to be completed during the project. The scope describes what is to be accomplished with the project. It defines the end-product to be delivered to the customer by a particular point in time and at a specified budget or cost.