Cloudflare 'Websites' and 'Workers & Pages'

Hi beginner here.
I currently have a static site hosted using 'Workers' with a custom domain. I also have that same domain under the 'Websites' section. What is the relationship between the two?

My issue is that the site is running a bit slow. Will paying for cloudflare premium or making optimizations under 'websites' improve my website hosted on 'workers'.

Thanks so much