All Blacks -The nickname given to the New Zealand team
Call - Another way of saying which team is throwing the ball into a line out. The thrower will shout a code that tells his teammates who is throwing the ball too. So if it was an Irish throw, it would be 'Ireland's call'.
Conversion - After a try is scored the team that scored it can attempt to win two bonus points. A player tries to kick the ball from the ground between the posts, if they do it's worth two points.
Drop goal - Worth three points, a drop goal is scored when the ball is kicked through the posts from open play. It must be dropped from the hands and then kicked at the moment that it hits the ground.
Grubber - A kick along the ground that bounces awkwardly and is difficult to pick up or control
Garryowen/Up and Under - A kick really, really high into the air that gives the kicker enough time to run underneath it and then tackle the catcher
Goal - A goal is another word for a successful kick through the posts, either a penalty or a conversion.
Haka - A special dance made famous by New Zealand before a game (versions are also done by Tonga and Samoa). It's a traditional war dance that was performed by Maori warriors before going into battle.
Hwyl - Welsh players are supposed to show so much pride when playing for their country that it's been given a special word
Knock-on - The ball hits a player's hand and then bounce forward onto the ground. Normally when a player tries to catch the ball or is tackled.
Lineout - If the ball goes out of play along side of the pitch play is restarted from a lineout. Both sets of forwards line up a metre apart and the hooker from the team who DIDN'T kick the ball out of play throws it in. In most cases the team throwing in should win the lineout.
Mark - If a player standing under a kicked ball catches it and calls "mark" just before it, no one is allowed to tackle him when he lands. However, he is not allowed to run either, and must kick the ball away, normally into touch
Maul - If a player is tackled but doesn't fall to the ground, then other players are allowed to try and use their arms to steal the ball from them. This is called mauling.
Offside - One of the key rules of rugby is that players must be behind the ball at all times. If they are in front of a teammate with the ball they are offside, or sometimes if they are standing too close to the opposition at a scrum, maul or ruck they are offside too.
Phases - Every time the ball goes into a ruck or maul, and the team that took the ball into it keeps possession to start attacking again it's called a phase. The more phases a team is able to keep possession for, the better.
Ruck - If a player is tackled and falls to the ground he has to let go of the ball. Other players will then try and win the ball for their team. They do this by using their boots to drag the ball back to their team-mates, called rucking.
Red card - If a plyer commits a very serious offece they are shown a red card, sending them off. Their team is not allowed to replace them, leaving them with 14 players.
Scrum - If the play stops for a minor offence a scrum often restarts play. Both sets of forwards bind together and crouch down, leaning against each other. The scrum half from team that DIDN'T break the rules throws the ball into the scrum. The team throwing the ball in should win it back every time.
Scrum half - The link between the backs and the forwards. He puts the ball into the scrum, and whenever the ball is on the ground, should be the first to the breakdown.
Tackle - When a defending player stops a player with the ball from running any further with it. They wrap their arms around the opposition player and bring them to the ground. They must tackle them below the chest.
Throw in - If the ball goes off the pitch along the side, called into touch, the game must be restarted with a line out. A throw in is when the ball is thrown back into the field of play.
Try - A try is scored when the ball is touched down behind the try line but in front of the dead ball line, called the in-goal area. It is worth five points, and the player scoring it must have control of the ball and apply downward pressure to it.
Yellow card - If a player commits an offence that is serious then the referee can choose to warn them with a yellow card. That means a player must spend 10 minutes off the pitch sat in a sin-bin. He cannot be replaced, so the team is down to 14 men.