What is a lightbox gallery in Moodle?
The Lightbox Gallery allows you to create image galleries within your Moodle course. The Lightbox system is a set of scripts than can be used to apply various effects to image galleries.
What is a photo gallery lightbox?
An image lightbox is a multi-functional plugin that handles both image galleries and image "magnification". These use cases used to be covered by Foundation's Clearing Lightbox.