To display images in a more descriptive form, Image Gallery provides an option to display the caption on image/image hover.
A caption can be a trendy text, informative text, navigation text or anything that will give more information about the image.
Enable the option from Content (tab) > Additional Options > Show Caption and follow the steps below to add a caption to each image.
You can completely customize the image caption by applying a background color, text color, padding, vertical alignment, and typography. This setting is available under Style (tab) > Caption.