Room design refers to the process of planning and arranging the layout, colors, and furnishings of a space to create a functional and aesthetically pleasing environment. It involves considering factors such as the purpose of the room, the flow of movement, and the overall style. Common elements include furniture, lighting, and decor, which all contribute to the room's atmosphere. Effective room design also takes into account the principles of interior design, such as balance, contrast, and harmony. Designers often use tools like mood boards and 3D modeling software to visualize their ideas and ensure that the final result meets the needs and preferences of the occupants.