| structured data and schema | Special website code that gives search engines extra information about the content on your website; that information is sometimes displayed in search results, such as star ratings. |
| referrer | URL data that identifies the source of a user’s webpage request. |
| meta robots tag | Pieces of code that provide crawlers instructions for how to crawl or index web page content. |
| related keyword | Semantically or otherwise related queries, generated by the SEMrush algorithm. |
| uniform resource identifier | a string of character used to identify a resource: most commonly on the internet. |
