I'm not familiar with the professional playing of handball as I usually played it in elementary school and the handballs looked different, less soccer-like. They had many lines on them, giving them an interesting texture, and they were always red or dark blue/black.
The gameplay itself was also different; when I research the sport, I notice that they hit the ball into the other team's score rather than everyone working together to hit it against a wall.. I played it outside against a brick wall with my friends, however everything about the professional sport seems different. The professional version seems almost boring, although I don't like sports in general so that may just relate to my personal preferences. It feels like soccer but with your hands, and I personally don't like soccer.