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 A project charter is a short document that lists the scope, objectives, deliverables, and stakeholders of a project, and delineates roles and responsibilities of each member of the project team. When comparing project charter vs project plan , a project plan is a formal, approved document that guides project execution and control.