Difference between Static Assets and Pages?

Hi. I just noticed a Static Assets option in Cloudflare Docs, and I fail to see practical difference between the two. There is a page https://developers.cloudflare.com/workers/static-assets/compatibility-matrix/ that shows the difference in avaliable features, but it still doesn't explain how are two products different specifically.

Like for example, if I have a Nuxt3 SSR app with bindings for R2, can't I just use both? Pages also support SSR via Pages Functions. So what's the difference here?
Cloudflare Docs
Compatibility matrix for asset hosting on Cloudflare Workers and Pages.
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