Wrong.
Search engines are not just about ‘Internet search engines’ like Google, Bing, and Yahoo.
Think about the ‘site-specific’ search engines.
Like, ‘Favbrowser-specific’ search engine. I can type fb (meaning ‘Favbrowser’) in the address bar, then type ‘Opera’ and as a result ‘favbrowser.com’ will be opened and I will get all the ‘Opera-related’ articles.
And this can be applied to any site. As simple as it gets.