This is the most common way of getting out.

A batter is out caught when a fielder catches the ball directly off the bat, before it has hit the ground.

The ball doesn't have to come directly off the bat though.

It can deflect from the pad on to the bat or from the bat on to the pad and still be caught, so long as the fielder takes the ball on the full.

Also if the ball hits the batter on the hand, below the wrist, then you can still be out caught.

But you can't be given out caught off a no-ball.

When a bowler takes a catch off their own bowling, the batsman is out caught and bowled.

And when a wicketkeeper takes the catch the batter is out caught behind.

If the ball gets caught in a batter's pads and a fielder removes it and attempts to claim a catch, the umpire should give the batsman "not out" as the ball is a "dead ball".