Do you want people to click on your search result? Learn how to write the best meta description. Including 7 characteristics and examples!| Yoast
Keyword difficulty measures how hard it would be to rank in Google’s top 10 results for a keyword.| Semrush Blog
Featured snippets can help users find your website. Learn more about what featured snippets are, how to opt out, and how they can work for your site.| Google for Developers