Anil Kumble became the first Indian bowler to reach 500 Test wickets in 2006. He got his 500th wicket by bowling out New Zealand batsman Chris Martin.
A run out is when a batsman is dismissed when they are out of their ground and the fielding side has the ball in their possession. A bowled dismissal is when a batsman is dismissed when the ball hits the stumps and they are not able to avoid being hit. An LBW dismissal is when a batsman is dismissed when the ball hits their pad and the umpire believes that it would have hit the stumps if the batsman had not been there. A catch out is when a batsman is dismissed when a fielder catches the ball after they have hit it.
In the case of Anil Kumble’s 500th wicket, he bowled a ball that Chris Martin was unable to avoid, and the ball hit the stumps and dismissed him.