How does the search feature work?

I am just curious to how the search feature works in the blogs directory plugin.

When on the blogs directory page, in the search box, does it search just the site title and description or does it search content on the site as well?

For example, say I am searching for “cats” Does it just search site titles that have the keyword “cats” in it. Or does it search the content on all sites and displays all sites with the word “cats” in the content (posts or pages).

Also does this plugin work with the global search plugin? Will both search features show the same results?

If I type in “cats” in the blog directory search box, will I get the same results typing “cats” in the global search plugin as well?