A feature is an alternative to a news article that allows you to profile something that isn't topical or time-sensitive the way a news article is. A common example is a profile of a faculty member or student.
In other words, a feature is useful for profiling someone or something on your site for a long time, whereas a news article's lifespan is generally short.
Here is an example of a Feature:
You can add a features widget to any page on your website. Adding a features widget to a page is a 2-step process: