A 3D model is a digital blueprint defined by mathematical data, while a 3D object is a tangible or rendered instance derived from that model.
- **3D Model**: Digital and structural, containing data like vertices, edges, and textures for creation or modification. It serves as the foundational "blueprint" for generating objects. - **3D Object**: Visible and usable, existing as physical (e.g., 3D-printed part) or digital (e.g., video game character) instances derived from the model.
In short, models are the underlying data; objects are the realized forms—start with a simple model (e.g., a cube) and render/print it to see the object.