What is the difference between a news item and a feature article?

What are the criterias for a news item and what are the criterias for a feature article?

I need to write both a news item and a feature article in an assignment so it is important I know the differences between these two.

A feature article is usually begun on the front page of a newspaper, and has a headline accompanying it.
A news item is usually inside the papers inner pages, with a very small headline.