Before jumping on to find what is a WordPress website we need to understand Wordpress.
Wordpress: WordPress is an online open source platform that helps users to create a website without any coding knowledge. To understand it in a technical way it is an open source CMS(content management system) licensed under GPLv2 that means any person is liable to manage or modify the WP software without any extra costs.
It is a great tool that helps users to have their blogs and website without assistance from a third party.
In short, a WordPress website is a website that is created and powered by the WordPress software platform. Over 32% of the total sites on the Internet are WP-based.