It's often called a wall.
The primary job of a forward (front) in soccer is to attempt to score or at least be a contributor to a scoring play. They are also expected to perform defensive play to a more or lesser extent depending on the style of play.
A cross.
You are probably describing the penalty area. It is the larger of the 2 rectangles in front of the goal.
A 4-3 defense is a defensive front that consists of 4 defensive linemen (typically two tackles and two ends) and 3 linebackers.
As a defensive measure, in case the front trench was overrun.
There are many ways in which one can use defensive techniques from a front bear hug. The classic way is slide your hands between the torso and the arms of the attacker, and push them open.
They did what we do know, play in front of people and try to get the ball in the goal.
The "Homefront" of world war two was a term coined to refer to the defensive lines surrounding the United Kingdom. With any battle, the demarcation between enemy territory and your own territory where your defensive lines are placed is called a front, hence, the Eastern front marked Germany's Russian incursion and their western front stretched over to Morocco at the height of their campaign. The "Homefront" refers to the efforts of the citizens "back home" supporting the war effort.
In front of the net
The stopper in soccer simply stops anything that passes the midfield. Your job is to play behind the center mid fields and basically act as a defensive midfielder. You have a support system behind you but try to keep the ball in front of you at all times.
Half court is 47 feet away from the basket.
A defensive player who lines up behind the defensive linemen and in front of the defensive backfield. The linebackers are a team's second line of defense.