A 3-D model is a digital representation of an object or scene that has three dimensions: width, height, and depth. Unlike 2-D images, which only show length and height, 3-D models provide a more realistic view, allowing for rotation and manipulation. These models are commonly used in various fields, including architecture, video games, and animation. Creating a 3-D model typically involves using specialized software, such as Blender or AutoCAD. Artists and designers can build models from scratch or modify existing ones, adding textures and colors to enhance realism. 3-D models can be used for visualizations, simulations, or even 3-D printing.