A schematic drawing is a visual representation of a system or process. There are many synonyms for this term, including: diagram, chart, blueprint, plan, layout, sketch, and model. A diagram is a simplified illustration that outlines the structure and components of a system, usually accompanied by labels or descriptions. A chart is a graphic representation that displays data in a clear and organized manner. A blueprint refers to an architectural or engineering drawing that outlines the design of a structure or machine. A plan is a detailed strategy or roadmap for achieving a goal. A layout refers to the arrangement of elements within a design. A sketch is an informal drawing that captures the essence of a concept or idea. A model is a three-dimensional representation of an object or system that can be used to simulate its behavior.