World Cup balls are designed anew for each World Cup. Adidas makes them. They vary especially in pattern, and number and size of the seams.
Pro balls are inflated to rock-hard levels, unlike recreational balls. That's one reason people are concerned about brain injury from heading in pro soccer despite the fact that more concussions in soccer are from collisions on the field.
What sorts of speeds are attained by balls in the highest levels of soccer? Obviously it depends on the purpose of the pass or kick, but most are in the 20-80 mph range. Free kicks and penalty kicks can reach 90-100 mph. The fastest recorded penalty kick was 131 mph. Those balls can bang up a goalie pretty bad.