to play a game.
This will depend upon which sport the ball is being made for. A rubber type material is used in most balls, whether lacrosse, golf, or football. The other materials may be a plastic (golf balls) or leather (football, baseball, etc.), or a "cloth" (tennis balls).
NFHSA seals balls @ 5ozs X 9"
No, it is a noun. Used with other nouns (baseball game, baseball glove), it is considered a noun adjunct.
In baseball, the bat is used to hit the balls thrown by the pitcher.
Used balls get pitched in batting practice; unused balls go back in the bag for the next game.
15 red snooker balls.
I know there are 24 used in football all supplied by the home team.
If you mean "How are baseballs and baseball any different", then baseballs are balls that are used in the game of baseball. Like football.
In a single season there are from 291,600 to 340,200 balls used. There are usually 60 to 70 balls used in a single 9 inning game, but they usually have 90 on hand.
It depends on the game. There are 15 balls in a standard set. However, all of the balls are not always used, and some games use different balls.
Every game starts out with 72 baseballs. The average life of a baseball, is 6 putches, so if you take the average pitches thrown in a game 250 - 300, you get about 40 or 50 balls used in a game. A side note, every ball that will be used in a game has mud from Mississippi worked into the ball. This is why they are never bright white.