A widget is a add on within the website that can add a special function, or feature. The search bar above is an example of adding in a special function. Other examples can be a calendar, a comment section for recent posts, or even a social icons section for quick access to linked sites. This could be useful for everyone as it helps with accessibility.

A theme is what is shown and represents the website being created, It controls the visual elements such as colors, fonts, and even how the layout of the site looks. The theme above could be useful in creating an environment that is soothing for the client looking at the website.

A plug-in is a simple way to enhance the functionality of your website, without having to code anything yourself. It is comparable to installing an app on your phone. A good example of a plug-in is the Akismet Anti-spam: spam protection plug-in at the top of this image. Installing it would be beneficial in stopping spam from bogging down a clients website.