3D rendering and animation are two related but distinct concepts in computer graphics. 3D rendering involves creating a 2D image or video from a 3D model by simulating the way that light interacts with the model's surfaces and materials. This process can be done using specialized software that calculates the way that light bounces off surfaces and creates shadows and reflections. The resulting image or video can be used for a variety of purposes, such as architectural visualization, product design, or entertainment.

Animation, on the other hand, involves creating a series of images or frames that, when played back in sequence, create the illusion of motion. 3D animation is similar to traditional animation in that it involves creating a sequence of frames, but instead of drawing each frame by hand, 3D animation involves creating a 3D model and then animating it using specialized software. This allows for greater control over the animation process and the ability to create complex movements and interactions between objects.

Both 3D rendering and animation require specialized software and skills, but they can be used to create stunning visual effects and immersive experiences in a variety of industries, from video games and movies to product design and marketing.