The Query Loop block is a powerful tool that lets you display posts, pages, or custom post types with specific parameters. It's similar to the Latest Posts block, but with greater complexity and flexibility.
In WordPress, a "loop" is a way of displaying similar information repeatedly. For example, a loop of blog posts would show the title, featured image, author name, publish date, and a short description of each post. The loop pulls this data from posts (or any post type) and displays it to site visitors.
The Query Loop block makes it easy to build custom loops of content.