I always say it’s like the difference between rugby league and rugby union.
In Union the ball is in play for an average of 30% of the game. There are many instances in the game where players are stood around for minutes at a time. In rucks it can go on for twenty phases of fat forwards running two metres from the last one. When a team gets the ball near their own line they hoof it as far up field as possible to get the ball as far away from their own in-goal as possible.
In League the ball is in play an average of 72% of the game (that’s more than football). There are something like nine times as many passes compared to Union. There are very few instances where everyone is stood around doing nothing for ages. When a team gets the ball near their own line they play it out from the back and take it forward with passing rather than by hoofing it.