What's the difference between this and searching for "define: word" on google? http://www.google.com/search?hl=en&safe=off&q=define%3Avienna&btnG=Search http:/

What's the difference between this and searching for "define: word" on google? http://www.google.com/search?hl=en&safe=off&q=define%3Avienna&btnG=Search http://www.google.com/search?hl=en&safe=off&q=define...