Spinning reels which are often mistaken by name with spin cast reels are the only reels that have a completely open face that is maintained by a bail arm and line roller. Spin cast reels on the other hand feature a cover over the spool and although they technically spool the line the same way as a spinning reel they are in no way as efficient when it comes to drag quality and casting distance.
Spin cast reels are easily recognized since they have a covered face which always has a tiny hole in the center for which the line goes through. Spin cast reels are very easy to work and excel for use with children and newer anglers.
Baitcasting reels began as direct drive knuckle busters but have evolved into finely tuned workhorses over the years.