The WordPress Content Management System (CMS) is a very popular CMS used by millions of websites today. It powers over 25% of all Websites currently. There are a variety of uses, it can be used to easily organize, manage, and create content on the web and handle interactions with visitors and contributors. It currently is used to power various e-commerce websites as well as content websites popularly called blogs.
There are a lot of tools that come with the default WordPress installation which allows you to install and configure your WordPress website. There are a lot of options that come with the default WordPress installation. You can install themes, plugins and even add custom functionality to the Web interface of WordPress.