Spinner
The wait for something whose shape you do not know yet — a submit, a panel fetching. Prefer Skeleton when the layout is known, and Shimmer for a model working in a transcript. Same arc as Loader and Button's pending state.
Playground
For a wait whose shape you do not know yet. When you do know the shape, a Skeleton is better — it reserves the space, so nothing jumps when the data arrives.
<Spinner size="md" label="Loading" />Loading…