In WordPress, a plugin is an easily-installed PHP code that adds functions to your WordPress website.
You can install new plugins from the Plugins<Add New area of your WordPress admin dashboard.
Please see the link below for a detailed post about adding plugins in WordPress.
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Look up plug-in or add-on in Wiktionary, the free dictionary. |
In computing, a plug-in (or plugin, add-in, addin, add-on, or addon) is a software component that adds a specific feature to an existing computer program. When a program supports plug-ins, it enables customization.
A theme or skin is a preset package containing additional or changed graphical appearance details, achieved by the use of a graphical user interface (GUI) that can be applied to specific software and websites to suit the purpose, topic, or tastes of different users to customize the look and feel of a piece of computer software or an operating system front-end GUI (and window managers).