CORNER

A 'corner' is the place where two lines of different dimensions meet at an angle, and a convex corner of intersecting walls is generally thought to be the least beneficial position to be in a life-or-death situation. From this notion was born the verb 'to corner', which is used to mean "To back (another person or animal) into a corner" and usually also carries a connotation of foul play. Corners have been the subject of many modernist novels, whose protagonists customarily develop fascinating new corners and places to put them.
In square dance, 'corner' refers to the person you are adjacent to who is not your partner. In standard positioning (boy on the left, girl on the right), this would be for men (or gents) the person standing to one's left, and for ladies the person standing to one's right. In square dance one will often change partners and corners during the course of a dance, in which case one can distinguish between the "original corner" and a "situational corner".
In sports such as football (soccer) or boxing, 'corner' may refer to a person or position (cornerman).
In ice hockey, corners are the curvatures in the rink where the long side boards and shorter end boards meet.
A corner is also used in geography, such as the Four Corners Monument in the United States, marking the corner of state boundary lines.
A corner can also mean a bend in a road or a turn on a race track. Taking a corner better than the other drivers is key in true motor racing, such as Formula One, the World Rally Championship, etc.
In most fighting video games, the edge of the stage is referred to as the "corner," because much like a corner in a wall, it is typically a disadvantageous position, which allows for more combination attacks and makes escaping offensive pressure significantly more difficult.