Avant garde font is one of the most common fonts. I was created/designed by Herb Lubalin and Tom Carnase. It was based on the 1920 Bauhaus movement. It is considered a sans serif font meaning without serif (the little hooks and edges like book fonts, courier, have) If you want to download a free copy of the avant garde font check out this site.
. http://www.fontyukle.com/en/ara.php?ara=Avant+Garde