How can I list 5 recent posts that aren't featured posts?

I am doing a light child theme based on twenty twelve and wanted to add two different sets of links (with excerpts) to the front page template.

One set of links would be the most recent 5 featured posts.

The other set of links would be the most recent 5 posts that are not featured posts, so the same post doesn’t show up twice on the front page.

Is that possible? Practical? I’m guessing it could be done with some sort of loop type thing.

Is “featured posts” considered a category?

Would something like:

<?php query_posts($query_string . '&cat=-3,-8'); ?>

work? I found that on http://codex.wordpress.org/The_Loop