Say player A's ball is sitting on the green, if player B's ball hit's A's ball and A goes in the hole, it must be replaced to the original position. If B's ball goes in, it is classed as holed. This scenario applies on if B hits from off the green. If he is on the green and hits A's ball he receives a two shot penalty.
it doesn't count
no,if you hit the other persons ball and it goes in the hole it does not count.
Hole out is simply finishing a hole of golf, obviously by putting the ball in the hole.
It is admitting that you cannot beat or equal your opponents score, no further strokes will be played on that hole.
putt
The ball must come to rest at the bottom of the cup for the ball to be deemed as holed. Say you are pitching as your third shot and the ball goes in and comes out, you must play the ball as it lies and you will be putting for four. If for example you pitch it into the hole and it gets lodged between the cup and the flag you can walk up and nudge the pin so the ball goes into the hole, but if you try to pull it out and the ball flicks out you must again play the ball as it lies, the shot was not holed.
15meters
Take it out of the hole and take a one shot penalty and place the ball no closer to the pin and in line with the hole.
ball
You use a club to hit a ball into a hole.
In golf there is a certain number of strokes or hits of the ball that is required to finish the hole in, this is called par. If a person gets the ball into the hole one stroke or ball hit under par this is called birdie. It means you completed the hole faster than the average completion rate for the hole.
A Hole in One