A WordPress plugin can be understood as a piece of code, a software application, or an add-on application that you can download and install to your WordPress website without the need to learn to code. It is the application you download on your smartphone.
WordPress plugins can transform your website’s appearance and performance by adding or extending new functionality. In that case, it allows you to create virtually any website, from eCommerce stores to portfolios to directory sites.
Many WordPress plugins are available for free download from the WordPress.org Plugin Directory. There are also premium or paid WordPress plugins.