It's a front end for running Stable Diffusion. It can generate anything, but the embeddings allow people to augment Stable Diffusion with specific concepts. So

It's a front end for running Stable Diffusion. It can generate anything, but the embeddings allow people to augment Stable Diffusion with specific concepts. So the embeddings they linked to could potentially be seen as something that turns a general-purpose tool into a tool for generating those types of images.