WordPress is a factory that makes webpages
It stores your content that allows you to create & publish webpages only requiring a domain and a hosting site to work.
WordPress is a free and open-source content management system based on PHP & MySQL. Features include a plugin architecture and a template system. It is most associated with blogging but supports other types of web content including more traditional mailing lists and forums, media galleries, and online stores.
WordPress is, by far, the most popular open source Content Management System (CMS), used by approximately 75 million websites. WordPress is free to install, deploy, and upgrade. Thousands of plugins and templates power a flexible and simple interface, which reduces development costs and deployment time.