A corner plays on the edges of the line of scrimmage and the safety plays in the middle of the field. Safeties provide more support on running plays than do cornerbacks. Cornerbacks are generally smaller and faster than safeties. Both postitions are considered defensive backs.
All I could find was that a nub corner has to do with a passing formation in American Football. See:Training the “Nub†Side Corner in the Run GameandCatholic Football League
A corner kick.
No.
Brentford
In football, a standard match requires four compulsory corner flags, one at each corner of the pitch. These flags must be at least 1.5 meters high and clearly visible. The presence of corner flags helps to define the playing area and indicates the corners from which corner kicks can be taken.
every time you get a corner you build a shop
three they are free kick corner and free shoot.
The corner arc has a radius of 1 yard with a center on the intersection of the goal line and the touch line.
When the ball goes out of play over the backline and was last touched by a defender, the attacking team receives a 'corner kick', where the ball is placed within a yard of the corner post and then taken as a free kick. 'Corner' is short for 'corner kick'.
A standard football pitch has four right angles, one at each corner of the rectangular playing area. Each corner forms a 90-degree angle, contributing to the overall dimensions of the pitch.
The corner flag in football is required to be 5 feet tall to ensure visibility for players, officials, and spectators during the game. This height helps to clearly mark the corner area of the pitch and indicates where corner kicks are taken. Additionally, the standardized height maintains consistency across different matches and leagues, contributing to the overall organization of the sport.
The ball is placed inside the corner arc (on the line is considered inside). The ball must be kicked and must move.