Australian rules football, officially known as Australian football, also called football, footy or Aussie rules (and in some regions is marketed as AFL, after the Australian Football League, the only fully professional Australian football league is a sport played between two teams of 18 players on the field on either an Australian Football ground, a modified cricket field or similar sized sports venue.
The two tall central posts are the goal posts, and the two shorter outer posts are the behind posts
A goal, worth 6 points, is scored when the football is propelled through the goal posts at any height (including above the height of the posts) by way of a kick from the attacking team. It may fly through “on the full” (without touching the ground) or bounce through, but must not have been touched, on the way, by any player from either team. A goal cannot be scored from the foot of an opposition (defending) player.