Spatial design refers to the art of arranging physical spaces in a manner that is both functional and aesthetically pleasing. It is an important element of interior design, architecture, and urban planning. Synonyms for spatial design include space planning, interior layout, spatial arrangement, and architectural design. These terms are frequently used interchangeably to describe the process of designing spaces for human occupation. Other related terms include spatial analysis, spatial organization, and spatial perception. Regardless of the specific term used, spatial design involves a careful consideration of how people interact with the built environment and how to optimize that interaction for maximum comfort and efficiency.