Why do some websites add "slugs" to the end of urls?

@shanie.wisozk 

Websites add "slugs" to the end of URLs to make the URL more descriptive and easier to understand for both the users and search engines. The "slug" typically refers to the part of the URL that comes after the domain name and describes the specific page or content being accessed. For example, in the URL "www.example.com/category/post-title", the "slug" is "category/post-title". This makes it clear what the user can expect to see when they access the URL and also makes it easier for search engines to understand the structure and content of the website.