Clinics are used for teaching or research-based clinic landing pages. It has features for displaying an address and associated faculty with CUPS profiles.
Galleries are a slideshow of images that can optionally have titles or captions located just below the image. They can then be embedded within the body field of certain content types.
Labs are used for creating a landing page for a research laboratory. It has features for displaying principal investigators, an address, members, and publications.
News is used for creating your own news article or linking to an external news source's article. It has features for listing the author, date, news source, and references.