WordPress is not a CMS. WordPress is a content management system (CMS) that allows you to create a website or blog from scratch, or to improve an existing website. WordPress is free and open source software, available on many operating systems. WordPress is popular among small businesses and bloggers because it is easy to use, flexible, and customizable.
WordPress also has a large community of users who can help you with advice and support. However, if you are looking for features that are specific to a CMS, such as the ability to create custom pages and posts, you may want to look at a different platform.